diff --git a/api.php b/api.php
index 3801561f8..4caecfecd 100644
--- a/api.php
+++ b/api.php
@@ -86,22 +86,22 @@
 
     switch ($_GET['list']) {
         case 'black':
-            $_POST['type'] = ListType::blacklist;
+            $_POST['type'] = LISTTYPE_BLACKLIST;
 
             break;
 
         case 'regex_black':
-            $_POST['type'] = ListType::regex_blacklist;
+            $_POST['type'] = LISTTYPE_REGEX_BLACKLIST;
 
             break;
 
         case 'white':
-            $_POST['type'] = ListType::whitelist;
+            $_POST['type'] = LISTTYPE_WHITELIST;
 
             break;
 
         case 'regex_white':
-            $_POST['type'] = ListType::regex_whitelist;
+            $_POST['type'] = LISTTYPE_REGEX_WHITELIST;
 
             break;
 
diff --git a/scripts/pi-hole/php/database.php b/scripts/pi-hole/php/database.php
index f3fe34874..f52c61698 100644
--- a/scripts/pi-hole/php/database.php
+++ b/scripts/pi-hole/php/database.php
@@ -7,6 +7,12 @@
 *    Please see LICENSE file for your rights under this license
 */
 
+// List Type Constants
+const LISTTYPE_WHITELIST = 0;
+const LISTTYPE_BLACKLIST = 1;
+const LISTTYPE_REGEX_WHITELIST = 2;
+const LISTTYPE_REGEX_BLACKLIST = 3;
+
 function getGravityDBFilename()
 {
     // Get possible non-standard location of FTL's database
@@ -278,13 +284,3 @@ function remove_from_table($db, $table, $domains, $returnnum = false, $type = -1
 
     return 'Success, removed '.$num.' domain'.$plural;
 }
-
-if (!class_exists('ListType')) {
-    class ListType
-    {
-        public const whitelist = 0;
-        public const blacklist = 1;
-        public const regex_whitelist = 2;
-        public const regex_blacklist = 3;
-    }
-}
diff --git a/scripts/pi-hole/php/groups.php b/scripts/pi-hole/php/groups.php
index 5a12138e5..889cfcd9b 100644
--- a/scripts/pi-hole/php/groups.php
+++ b/scripts/pi-hole/php/groups.php
@@ -508,7 +508,7 @@ function verify_ID_array($arr)
                 array_push($groups, $gres['group_id']);
             }
             $res['groups'] = $groups;
-            if ($res['type'] === ListType::whitelist || $res['type'] === ListType::blacklist) {
+            if ($res['type'] === LISTTYPE_WHITELIST || $res['type'] === LISTTYPE_BLACKLIST) {
                 // Convert domain name to international form
                 // Skip this for the root zone `.`
                 if ($res['domain'] != '.') {
@@ -571,9 +571,9 @@ function verify_ID_array($arr)
         if (isset($_POST['type'])) {
             $type = intval($_POST['type']);
         } elseif (isset($_POST['list']) && $_POST['list'] === 'white') {
-            $type = ListType::whitelist;
+            $type = LISTTYPE_WHITELIST;
         } elseif (isset($_POST['list']) && $_POST['list'] === 'black') {
-            $type = ListType::blacklist;
+            $type = LISTTYPE_BLACKLIST;
         }
 
         if (!$insert_stmt->bindValue(':type', $type, SQLITE3_TEXT)
diff --git a/scripts/pi-hole/php/teleporter.php b/scripts/pi-hole/php/teleporter.php
index d9a4ba27b..0161a9ad7 100644
--- a/scripts/pi-hole/php/teleporter.php
+++ b/scripts/pi-hole/php/teleporter.php
@@ -242,13 +242,13 @@ function archive_insert_into_table($file, $table, $flush = false, $wildcardstyle
     $type = null;
     if ($table === 'whitelist') {
         $table = 'domainlist';
-        $type = ListType::whitelist;
+        $type = LISTTYPE_WHITELIST;
     } elseif ($table === 'blacklist') {
         $table = 'domainlist';
-        $type = ListType::blacklist;
+        $type = LISTTYPE_BLACKLIST;
     } elseif ($table === 'regex_blacklist') {
         $table = 'domainlist';
-        $type = ListType::regex_blacklist;
+        $type = LISTTYPE_REGEX_BLACKLIST;
     } elseif ($table === 'domain_audit') {
         $table = 'domain_audit';
         $type = -1; // -1 -> not used inside add_to_table()
@@ -578,10 +578,10 @@ function noun($num)
         exit('cannot open/create '.htmlentities($archive_file_name)."<br>\nPHP user: ".exec('whoami')."\n");
     }
 
-    archive_add_table('whitelist.exact.json', 'domainlist', ListType::whitelist);
-    archive_add_table('whitelist.regex.json', 'domainlist', ListType::regex_whitelist);
-    archive_add_table('blacklist.exact.json', 'domainlist', ListType::blacklist);
-    archive_add_table('blacklist.regex.json', 'domainlist', ListType::regex_blacklist);
+    archive_add_table('whitelist.exact.json', 'domainlist', LISTTYPE_WHITELIST);
+    archive_add_table('whitelist.regex.json', 'domainlist', LISTTYPE_REGEX_WHITELIST);
+    archive_add_table('blacklist.exact.json', 'domainlist', LISTTYPE_BLACKLIST);
+    archive_add_table('blacklist.regex.json', 'domainlist', LISTTYPE_REGEX_BLACKLIST);
     archive_add_table('adlist.json', 'adlist');
     archive_add_table('domain_audit.json', 'domain_audit');
     archive_add_table('group.json', 'group');