diff --git a/customer_domains.php b/customer_domains.php
index 064e14d9..9fe579d9 100644
--- a/customer_domains.php
+++ b/customer_domains.php
@@ -341,7 +341,7 @@ if($page == 'overview') {
 						"customerid" => $userinfo['customerid'],
 						"domain" => $completedomain,
 						"documentroot" => $path,
-						"aliasdomain" => $aliasdomain != 0 ? $aliasdomain : "NULL",
+						"aliasdomain" => $aliasdomain != 0 ? $aliasdomain : null,
 						"parentdomainid" => $domain_check['id'],
 						"isemaildomain" => $domain_check['subcanemaildomain'] == '3' ? '1' : '0',
 						"openbasedir" => $domain_check['openbasedir'],
@@ -572,7 +572,7 @@ if($page == 'overview') {
 							"isemaildomain" => $isemaildomain,
 							"wwwserveralias" => $wwwserveralias,
 							"iswildcarddomain" => $iswildcarddomain,
-							"aliasdomain" => ($aliasdomain != 0 && $alias_check == 0) ? $aliasdomain : 'NULL',
+							"aliasdomain" => ($aliasdomain != 0 && $alias_check == 0) ? $aliasdomain : null,
 							"openbasedir_path" => $openbasedir_path,
 							"ssl_redirect" => $ssl_redirect,
 							"customerid" => $userinfo['customerid'],