diff --git a/src/www/firewall_nat_edit.php b/src/www/firewall_nat_edit.php
index d9adbd254..1f25071d4 100644
--- a/src/www/firewall_nat_edit.php
+++ b/src/www/firewall_nat_edit.php
@@ -55,7 +55,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'GET') {
     $pconfig['dstbeginport'] = 80 ;
     $pconfig['dstendport'] = 80 ;
     $pconfig['local-port'] = 80;
-    $pconfig['associated-rule-id'] = true;
+    $pconfig['filter-rule-association'] = "add-associated";
     if (isset($configId)) {
         // copy 1-on-1
         foreach (array('protocol','target','local-port','descr','interface','associated-rule-id','nosync','log',
@@ -1078,10 +1078,10 @@ $( document ).ready(function() {
                   <td><a id="help_for_fra" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?=gettext("Filter rule association"); ?></td>
                   <td>
                     <select name="filter-rule-association">
-                      <option value="" <?= empty($pconfig['associated-rule-id']) ? " selected=\"selected\"" : ""; ?>><?=gettext("None"); ?></option>
-                      <option value="add-associated" <?= !empty($pconfig['associated-rule-id']) && $pconfig['associated-rule-id'] != "pass" ? " selected=\"selected\"" : ""; ?>><?=gettext("Add associated filter rule"); ?></option>
-                      <option value="add-unassociated"><?=gettext("Add unassociated filter rule"); ?></option>
-                      <option value="pass" <?= $pconfig['associated-rule-id'] == "pass" ? " selected=\"selected\"" : ""; ?>><?=gettext("Pass"); ?></option>
+                      <option value="" <?= empty($pconfig['filter-rule-association']) ? " selected=\"selected\"" : ""; ?>><?=gettext("None"); ?></option>
+                      <option value="add-associated" <?= $pconfig['filter-rule-association'] == "add-associated" ? " selected=\"selected\"" : ""; ?>><?=gettext("Add associated filter rule"); ?></option>
+                      <option value="add-unassociated" <?= $pconfig['filter-rule-association'] == "add-unassociated" ? " selected=\"selected\"" : ""; ?>><?=gettext("Add unassociated filter rule"); ?></option>
+                      <option value="pass" <?= $pconfig['filter-rule-association'] == "pass" ? " selected=\"selected\"" : ""; ?>><?=gettext("Pass"); ?></option>
                     </select>
                     <div class="hidden" data-for="help_for_fra">
                       <?=gettext("NOTE: The \"pass\" selection does not work properly with Multi-WAN. It will only work on an interface containing the default gateway.")?>