diff --git a/src/www/firewall_aliases_edit.php b/src/www/firewall_aliases_edit.php
index eb6acbf09..ca1a6f3ff 100644
--- a/src/www/firewall_aliases_edit.php
+++ b/src/www/firewall_aliases_edit.php
@@ -271,7 +271,6 @@ if ($_SERVER['REQUEST_METHOD'] === 'GET') {
     }
 }
 
-$referer = (isset($_SERVER['HTTP_REFERER']) ? html_safe($_SERVER['HTTP_REFERER']) : '/firewall_aliases.php');
 
 legacy_html_escape_form_data($pconfig);
 
@@ -575,7 +574,7 @@ endforeach;
                   <td>&nbsp;</td>
                   <td>
                     <input id="submit" name="submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                    <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=$referer;?>'" />
+                    <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/firewall_aliases.php'" />
                   </td>
                 </tr>
               </table>
diff --git a/src/www/firewall_nat_1to1_edit.php b/src/www/firewall_nat_1to1_edit.php
index 614362020..09d3ae1de 100644
--- a/src/www/firewall_nat_1to1_edit.php
+++ b/src/www/firewall_nat_1to1_edit.php
@@ -394,7 +394,7 @@ include("head.inc");
                     <td>&nbsp;</td>
                     <td>
                       <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/firewall_nat_1to1.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/firewall_nat_1to1.php'" />
                       <?php if (isset($id)): ?>
                       <input name="id" type="hidden" value="<?=$id;?>" />
                       <?php endif; ?>
diff --git a/src/www/firewall_nat_edit.php b/src/www/firewall_nat_edit.php
index d032bc432..22a4364ce 100644
--- a/src/www/firewall_nat_edit.php
+++ b/src/www/firewall_nat_edit.php
@@ -1018,7 +1018,7 @@ $( document ).ready(function() {
                   <td>&nbsp;</td>
                   <td>
                     <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                    <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/firewall_nat.php';?>'" />
+                    <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/firewall_nat.php'" />
                     <?php if (isset($id)): ?>
                     <input name="id" type="hidden" value="<?=$id;?>" />
                     <?php endif; ?>
diff --git a/src/www/firewall_nat_npt_edit.php b/src/www/firewall_nat_npt_edit.php
index 4ec0af386..3a584abea 100644
--- a/src/www/firewall_nat_npt_edit.php
+++ b/src/www/firewall_nat_npt_edit.php
@@ -267,7 +267,7 @@ include("head.inc");
                     <td>&nbsp;</td>
                     <td>
                       <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/firewall_nat_npt.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/firewall_nat_npt.php'" />
                       <?php if (isset($id)): ?>
                         <input name="id" type="hidden" value="<?=htmlspecialchars($id);?>" />
                       <?php endif; ?>
diff --git a/src/www/firewall_nat_out_edit.php b/src/www/firewall_nat_out_edit.php
index 8ba56d8a3..310be014f 100644
--- a/src/www/firewall_nat_out_edit.php
+++ b/src/www/firewall_nat_out_edit.php
@@ -777,7 +777,7 @@ include("head.inc");
                   <td>&nbsp;</td>
                   <td>
                     <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                    <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/firewall_nat_out.php');?>'" />
+                    <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/firewall_nat_out.php'" />
 <?php
                     if (isset($id)):
 ?>
diff --git a/src/www/firewall_rules_edit.php b/src/www/firewall_rules_edit.php
index 1b18c83e5..3f10c73af 100644
--- a/src/www/firewall_rules_edit.php
+++ b/src/www/firewall_rules_edit.php
@@ -1415,7 +1415,7 @@ include("head.inc");
                       <td>
                         &nbsp;<br />&nbsp;
                         <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                        <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? html_safe($_SERVER['HTTP_REFERER']) : '/firewall_rules.php');?>'" />
+                        <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/firewall_rules.php'" />
                       </td>
                     </tr>
                   </table>
diff --git a/src/www/firewall_schedule_edit.php b/src/www/firewall_schedule_edit.php
index b8641d02f..bc7240077 100644
--- a/src/www/firewall_schedule_edit.php
+++ b/src/www/firewall_schedule_edit.php
@@ -1153,7 +1153,7 @@ function removeRow(el) {
                       <td>&nbsp;</td>
                       <td>
                         <input id="submit" name="submit" type="submit" onclick="return checkForRanges();" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                        <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/firewall_schedule.php');?>'" />
+                        <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/firewall_schedule.php'" />
                         <?php if (isset($id)): ?>
                           <input name="id" type="hidden" value="<?=$id;?>" />
                         <?php endif; ?>
diff --git a/src/www/firewall_scrub_edit.php b/src/www/firewall_scrub_edit.php
index a4c93a0d6..3e0bf3b9b 100644
--- a/src/www/firewall_scrub_edit.php
+++ b/src/www/firewall_scrub_edit.php
@@ -655,7 +655,7 @@ include("head.inc");
                       <td>
                         &nbsp;<br />&nbsp;
                         <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                        <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? html_safe($_SERVER['HTTP_REFERER']) : '/firewall_rules.php');?>'" />
+                        <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/firewall_rules.php'" />
                       </td>
                     </tr>
                   </table>
diff --git a/src/www/firewall_virtual_ip_edit.php b/src/www/firewall_virtual_ip_edit.php
index 4d202b176..cd5f7654f 100644
--- a/src/www/firewall_virtual_ip_edit.php
+++ b/src/www/firewall_virtual_ip_edit.php
@@ -452,7 +452,7 @@ $( document ).ready(function() {
                     <td>&nbsp;</td>
                     <td>
                       <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/firewall_virtual_ip.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/firewall_virtual_ip.php'" />
                       <?php if (isset($id) && $a_vip[$id]): ?>
                         <input name="id" type="hidden" value="<?=$id;?>" />
                       <?php endif; ?>
diff --git a/src/www/interfaces.php b/src/www/interfaces.php
index b9655a863..dc35c240c 100644
--- a/src/www/interfaces.php
+++ b/src/www/interfaces.php
@@ -3250,7 +3250,7 @@ include("head.inc");
                         <td width="22%"></td>
                         <td width="78%">
                           <input id="save" name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                          <input id="cancel" type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/interfaces.php');?>'" />
+                          <input id="cancel" type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/interfaces.php'" />
                           <input name="if" type="hidden" id="if" value="<?=$if;?>" />
 <?php
                           if ($pconfig['if'] == $a_ppps[$pppid]['if']) : ?>
diff --git a/src/www/interfaces_bridge_edit.php b/src/www/interfaces_bridge_edit.php
index 87ae960a7..e08ddf42a 100644
--- a/src/www/interfaces_bridge_edit.php
+++ b/src/www/interfaces_bridge_edit.php
@@ -621,7 +621,7 @@ $(document).ready(function() {
                       <td width="78%">
                         <input type="hidden" name="bridgeif" value="<?=$pconfig['bridgeif']; ?>" />
                         <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                        <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/interfaces_bridge.php');?>'" />
+                        <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/interfaces_bridge.php'" />
 <?php if (isset($id)): ?>
                         <input name="id" type="hidden" value="<?=htmlspecialchars($id);?>" />
 <?php endif; ?>
diff --git a/src/www/interfaces_gif_edit.php b/src/www/interfaces_gif_edit.php
index e4af50141..d9e85d3a8 100644
--- a/src/www/interfaces_gif_edit.php
+++ b/src/www/interfaces_gif_edit.php
@@ -275,7 +275,7 @@ include("head.inc");
                     <td>
                       <input type="hidden" name="gifif" value="<?=$pconfig['gifif']; ?>" />
                       <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/interfaces_gif.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/interfaces_gif.php'" />
                       <?php if (isset($id)): ?>
                       <input name="id" type="hidden" value="<?=htmlspecialchars($id);?>" />
                       <?php endif; ?>
diff --git a/src/www/interfaces_gre_edit.php b/src/www/interfaces_gre_edit.php
index bc6eadb9c..bab452cd2 100644
--- a/src/www/interfaces_gre_edit.php
+++ b/src/www/interfaces_gre_edit.php
@@ -264,7 +264,7 @@ include("head.inc");
                     <td width="78%">
                       <input type="hidden" name="greif" value="<?=$pconfig['greif']; ?>" />
                       <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save");?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/interfaces_gre.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/interfaces_gre.php'" />
                       <?php if (isset($id)): ?>
                       <input name="id" type="hidden" value="<?=$id;?>" />
                       <?php endif; ?>
diff --git a/src/www/interfaces_groups_edit.php b/src/www/interfaces_groups_edit.php
index 85fd0a7ad..90393cb01 100644
--- a/src/www/interfaces_groups_edit.php
+++ b/src/www/interfaces_groups_edit.php
@@ -200,7 +200,7 @@ legacy_html_escape_form_data($pconfig);
                     <td>&nbsp;</td>
                     <td>
                       <input name="submit" type="submit" class="btn btn-primary" value="<?=gettext("Save");?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/interfaces_groups.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/interfaces_groups.php'" />
                       <?php if (isset($id)): ?>
                       <input name="id" type="hidden" value="<?=$id;?>" />
                       <?php endif; ?>
diff --git a/src/www/interfaces_lagg_edit.php b/src/www/interfaces_lagg_edit.php
index dcb1de156..d48aaab6f 100644
--- a/src/www/interfaces_lagg_edit.php
+++ b/src/www/interfaces_lagg_edit.php
@@ -288,7 +288,7 @@ legacy_html_escape_form_data($pconfig);
                     <td width="78%">
                       <input type="hidden" name="laggif" value="<?=$pconfig['laggif']; ?>" />
                       <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/interfaces_lagg.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/interfaces_lagg.php'" />
                       <?php if (isset($id)): ?>
                       <input name="id" type="hidden" value="<?=$id;?>" />
                       <?php endif; ?>
diff --git a/src/www/interfaces_ppps_edit.php b/src/www/interfaces_ppps_edit.php
index 2fa87ad88..1d607b050 100644
--- a/src/www/interfaces_ppps_edit.php
+++ b/src/www/interfaces_ppps_edit.php
@@ -803,7 +803,7 @@ include("head.inc");
                         <td width="22%" valign="top">&nbsp;</td>
                         <td width="78%">
                           <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                          <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? html_safe($_SERVER['HTTP_REFERER']) : '/interfaces_ppps.php');?>'" />
+                          <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/interfaces_ppps.php'" />
                           <input name="ptpid" type="hidden" value="<?=$pconfig['ptpid'];?>" />
                           <?php if (isset($id)): ?>
                             <input name="id" type="hidden" value="<?=$id;?>" />
diff --git a/src/www/interfaces_qinq_edit.php b/src/www/interfaces_qinq_edit.php
index 8eab4ae6a..c325f2164 100644
--- a/src/www/interfaces_qinq_edit.php
+++ b/src/www/interfaces_qinq_edit.php
@@ -212,7 +212,7 @@ include("head.inc");
                     <td>&nbsp;</td>
                     <td>
                       <input name="submit" type="submit" class="btn btn-primary" value="<?=gettext("Save");?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/interfaces_qinq.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/interfaces_qinq.php'" />
                       <?php if (isset($id) && isset($a_qinqs[$id])): ?>
                       <input name="id" type="hidden" value="<?=$id;?>" />
                       <?php endif; ?>
diff --git a/src/www/interfaces_vlan_edit.php b/src/www/interfaces_vlan_edit.php
index 0e846d57c..a6d5ab67f 100644
--- a/src/www/interfaces_vlan_edit.php
+++ b/src/www/interfaces_vlan_edit.php
@@ -214,7 +214,7 @@ include("head.inc");
                     <td width="78%">
                       <input type="hidden" name="vlanif" value="<?=$pconfig['vlanif']; ?>" />
                       <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save");?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/interfaces_vlan.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/interfaces_vlan.php'" />
                       <?php if (isset($id)): ?>
                       <input name="id" type="hidden" value="<?=$id;?>" />
                       <?php endif; ?>
diff --git a/src/www/interfaces_wireless_edit.php b/src/www/interfaces_wireless_edit.php
index 8261f899f..a4bfcf5df 100644
--- a/src/www/interfaces_wireless_edit.php
+++ b/src/www/interfaces_wireless_edit.php
@@ -188,7 +188,7 @@ include("head.inc");
                     <input type="hidden" name="mode" value="<?=isset($pconfig['mode']) ? $pconfig['mode'] : 'bss' ?>" />
                     <input type="hidden" name="cloneif" value="<?=$pconfig['cloneif']; ?>" />
                     <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save");?>" />
-                    <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/interfaces_wireless.php');?>'" />
+                    <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/interfaces_wireless.php'" />
                     <?php if (isset($id)): ?>
                     <input name="id" type="hidden" value="<?=$id;?>" />
                     <?php endif; ?>
diff --git a/src/www/load_balancer_monitor_edit.php b/src/www/load_balancer_monitor_edit.php
index 60cd1fe39..09cd208dd 100644
--- a/src/www/load_balancer_monitor_edit.php
+++ b/src/www/load_balancer_monitor_edit.php
@@ -322,7 +322,7 @@ $types = array("icmp" => gettext("ICMP"), "tcp" => gettext("TCP"), "http" => get
                     <td valign="top">&nbsp;</td>
                     <td width="78%">
                       <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/load_balancer_monitor.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/load_balancer_monitor.php'" />
                       <?php if (isset($id)): ?>
                       <input name="id" type="hidden" value="<?=htmlspecialchars($id);?>" />
                       <?php endif; ?>
diff --git a/src/www/load_balancer_pool_edit.php b/src/www/load_balancer_pool_edit.php
index 53b22ec2c..035cf10c1 100644
--- a/src/www/load_balancer_pool_edit.php
+++ b/src/www/load_balancer_pool_edit.php
@@ -371,7 +371,7 @@ include("head.inc");
                     <td width="78%">
                       <br />
                       <input id="save" name="save" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>"/>
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/load_balancer_pool.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/load_balancer_pool.php'" />
                       <?php if (isset($id) && (empty($_GET['act']) || $_GET['act'] != 'dup')): ?>
                       <input name="id" type="hidden" value="<?=htmlspecialchars($id);?>" />
                       <?php endif; ?>
diff --git a/src/www/load_balancer_virtual_server_edit.php b/src/www/load_balancer_virtual_server_edit.php
index 6dd4dfdfe..d23dd78b1 100644
--- a/src/www/load_balancer_virtual_server_edit.php
+++ b/src/www/load_balancer_virtual_server_edit.php
@@ -317,7 +317,7 @@ include("head.inc");
                       <td>&nbsp;</td>
                       <td>
                         <input name="Save" type="submit" class="btn btn-primary" value="<?=gettext("Submit"); ?>" />
-                        <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/load_balancer_virtual_server.php');?>'" />
+                        <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/load_balancer_virtual_server.php'" />
                         <?php if (isset($id) && (empty($_GET['act'] ) || $_GET['act'] != 'dup')): ?>
                           <input name="id" type="hidden" value="<?=$id;?>" />
                         <?php endif; ?>
diff --git a/src/www/services_dhcp_edit.php b/src/www/services_dhcp_edit.php
index 789a4ae26..7b8afb383 100644
--- a/src/www/services_dhcp_edit.php
+++ b/src/www/services_dhcp_edit.php
@@ -531,7 +531,7 @@ include("head.inc");
                   <td></td>
                   <td>
                     <input name="Submit" type="submit" class="formbtn btn btn-primary" value="<?=gettext("Save");?>" />
-                    <input type="button" class="formbtn btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/services_dhcp.php');?>'" />
+                    <input type="button" class="formbtn btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/services_dhcp.php'" />
 <?php
                   if (isset($id)): ?>
                     <input name="id" type="hidden" value="<?=$id;?>" />
diff --git a/src/www/services_dhcpv6_edit.php b/src/www/services_dhcpv6_edit.php
index 992e84b8e..f3f4ab562 100644
--- a/src/www/services_dhcpv6_edit.php
+++ b/src/www/services_dhcpv6_edit.php
@@ -244,7 +244,7 @@ include("head.inc");
                     <td></td>
                     <td>
                       <input name="Submit" type="submit" class="formbtn btn btn-primary" value="<?=gettext("Save");?>" />
-                      <input type="button" class="formbtn btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/services_dhcpv6.php');?>'" />
+                      <input type="button" class="formbtn btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/services_dhcpv6.php'" />
                       <?php if (isset($id)): ?>
                       <input name="id" type="hidden" value="<?=$id;?>" />
                       <?php endif; ?>
diff --git a/src/www/services_dnsmasq_domainoverride_edit.php b/src/www/services_dnsmasq_domainoverride_edit.php
index dad28da2c..7d90600bd 100644
--- a/src/www/services_dnsmasq_domainoverride_edit.php
+++ b/src/www/services_dnsmasq_domainoverride_edit.php
@@ -32,7 +32,6 @@ require_once("system.inc");
 require_once("services.inc");
 require_once("interfaces.inc");
 
-$referer = (isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/services_dnsmasq.php');
 
 if (empty($config['dnsmasq']['domainoverrides']) || !is_array($config['dnsmasq']['domainoverrides'])) {
     $config['dnsmasq']['domainoverrides'] = array();
@@ -198,7 +197,7 @@ include("head.inc");
                       <td>&nbsp;</td>
                       <td>
                         <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save");?>" />
-                        <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=$referer;?>'" />
+                        <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/services_dnsmasq.php'" />
                         <?php if (isset($id)): ?>
                         <input name="id" type="hidden" value="<?=$id;?>" />
                         <?php endif; ?>
diff --git a/src/www/services_dnsmasq_edit.php b/src/www/services_dnsmasq_edit.php
index 21be2f64c..24085f066 100644
--- a/src/www/services_dnsmasq_edit.php
+++ b/src/www/services_dnsmasq_edit.php
@@ -283,7 +283,7 @@ include("head.inc");
                   <td>&nbsp;</td>
                   <td>
                     <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save");?>" />
-                    <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/services_dnsmasq.php');?>'" />
+                    <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/services_dnsmasq.php'" />
                     <?php if (isset($id)): ?>
                     <input name="id" type="hidden" value="<?=htmlspecialchars($id);?>" />
                     <?php endif; ?>
diff --git a/src/www/services_unbound_acls.php b/src/www/services_unbound_acls.php
index 3d77e60d4..2d9cb0f28 100644
--- a/src/www/services_unbound_acls.php
+++ b/src/www/services_unbound_acls.php
@@ -314,7 +314,7 @@ include("head.inc");
                   <td>
                       &nbsp;<br />&nbsp;
                       <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/services_unbound_acls.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/services_unbound_acls.php'" />
                   </td>
                 </tr>
               </table>
diff --git a/src/www/services_unbound_domainoverride_edit.php b/src/www/services_unbound_domainoverride_edit.php
index 2c1d1108f..d4b993cf9 100644
--- a/src/www/services_unbound_domainoverride_edit.php
+++ b/src/www/services_unbound_domainoverride_edit.php
@@ -154,7 +154,7 @@ include("head.inc");
                     <td>&nbsp;</td>
                     <td>
                         <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save");?>" />
-                        <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/services_unbound_overrides.php');?>'" />
+                        <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/services_unbound_overrides.php'" />
                         <?php if (isset($id)): ?>
                         <input name="id" type="hidden" value="<?=htmlspecialchars($id);?>" />
                         <?php endif; ?>
diff --git a/src/www/services_unbound_host_edit.php b/src/www/services_unbound_host_edit.php
index 3cf8e76f4..2b0f75c08 100644
--- a/src/www/services_unbound_host_edit.php
+++ b/src/www/services_unbound_host_edit.php
@@ -260,7 +260,7 @@ include("head.inc");
                     <td>&nbsp;</td>
                     <td>
                       <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save");?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/services_unbound_overrides.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/services_unbound_overrides.php'" />
                       <?php if (isset($id)): ?>
                       <input name="id" type="hidden" value="<?=$id;?>" />
                       <?php endif; ?>
diff --git a/src/www/services_wol_edit.php b/src/www/services_wol_edit.php
index e85dbb5b2..a3cfa93b6 100644
--- a/src/www/services_wol_edit.php
+++ b/src/www/services_wol_edit.php
@@ -156,7 +156,7 @@ legacy_html_escape_form_data($pconfig);
                     <td>&nbsp;</td>
                     <td>
                       <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save");?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/services_wol.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/services_wol.php'" />
                       <?php if (isset($id)): ?>
                       <input name="id" type="hidden" value="<?=htmlspecialchars($id);?>" />
                       <?php endif; ?>
diff --git a/src/www/system_advanced_sysctl.php b/src/www/system_advanced_sysctl.php
index 46e2d85a5..be62780a9 100644
--- a/src/www/system_advanced_sysctl.php
+++ b/src/www/system_advanced_sysctl.php
@@ -223,7 +223,7 @@ $( document ).ready(function() {
                     <td>&nbsp;</td>
                     <td>
                       <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? html_safe($_SERVER['HTTP_REFERER']) : '/system_advanced_sysctl.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/system_advanced_sysctl.php'" />
 
 <?php
                       if (isset($id)) :?>
diff --git a/src/www/system_gateway_groups_edit.php b/src/www/system_gateway_groups_edit.php
index 7d258b4b5..55bc02285 100644
--- a/src/www/system_gateway_groups_edit.php
+++ b/src/www/system_gateway_groups_edit.php
@@ -309,7 +309,7 @@ $( document ).ready(function() {
                     <td></td>
                     <td>
                       <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save");?>" />
-                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/system_gateway_groups.php');?>'" />
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/system_gateway_groups.php'" />
 <?php
                       if (isset($id)) :?>
                       <input name="id" type="hidden" value="<?=$id;?>" />
diff --git a/src/www/system_hasync.php b/src/www/system_hasync.php
index d4d9ef5b4..262aa480a 100644
--- a/src/www/system_hasync.php
+++ b/src/www/system_hasync.php
@@ -382,7 +382,7 @@ include("head.inc");
                   <td></td>
                   <td>
                     <input name="Submit" type="submit" class="btn btn-primary" value="Save" />
-                    <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/system_hasync.php');?>'" />
+                    <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/system_hasync.php'" />
                   </td>
                 </tr>
               </table>
diff --git a/src/www/system_routes_edit.php b/src/www/system_routes_edit.php
index 8ebf1d44e..85b4ace29 100644
--- a/src/www/system_routes_edit.php
+++ b/src/www/system_routes_edit.php
@@ -32,8 +32,6 @@ require_once("guiconfig.inc");
 require_once("filter.inc");
 require_once("interfaces.inc");
 
-$referer = (isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/system_routes.php');
-
 if (!isset($config['staticroutes']) || !is_array($config['staticroutes'])) {
     $config['staticroutes'] = array();
 }
@@ -330,7 +328,7 @@ include("head.inc");
                     <td></td>
                     <td>
                       <input id="save" name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save");?>" />
-                      <input id="cancel" type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=$referer;?>'" />
+                      <input id="cancel" type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='/system_routes.php'" />
 <?php
                       if (isset($id) && $a_routes[$id]) :?>
                         <input name="id" type="hidden" value="<?=htmlspecialchars($id);?>" />