diff --git a/src/etc/inc/interfaces.inc b/src/etc/inc/interfaces.inc
index 4671bdd5f..982b8cee0 100644
--- a/src/etc/inc/interfaces.inc
+++ b/src/etc/inc/interfaces.inc
@@ -3325,9 +3325,9 @@ function DHCP_Config_File_Advanced($interface, $wancfg, $wanif)
 
     $option_modifiers = "";
     if ($wancfg['adv_dhcp_option_modifiers'] != '') {
-        $modifiers = preg_split('/\s*,\s*(?=(?:[^"]*"[^"]*")*[^"]*$)/', $wancfg['adv_dhcp_option_modifiers']);
+        $modifiers = preg_split('/\s*(?<!\\\),\s*(?=(?:[^"]*"[^"]*")*[^"]*$)/', $wancfg['adv_dhcp_option_modifiers']);
         foreach ($modifiers as $modifier) {
-            $option_modifiers .= "\t" . $modifier . ";\n";
+            $option_modifiers .= "\t" . str_replace('\,', ',', $modifier) . ";\n";
         }
     }