diff --git a/interface/lib/classes/json_handler.inc.php b/interface/lib/classes/json_handler.inc.php
index d2acb229c924f8c78f18e38e7ea4c3581626b203..b435947b19a5a0e26b3b4b4ef80984d02f7dcf44 100644
--- a/interface/lib/classes/json_handler.inc.php
+++ b/interface/lib/classes/json_handler.inc.php
@@ -74,7 +74,8 @@ class ISPConfigJSONHandler {
         $ret->code = $code;
         $ret->message = $message;
         $ret->response = $data;
-        header('Content-Type: application/x-json; charset="utf-8"');
+        
+        header('Content-Type: application/json; charset="utf-8"');
         print json_encode($ret);
         exit;
     }