diff --git a/application/index/controller/Ajax.php b/application/index/controller/Ajax.php
index c4e2e865..a5d2c18d 100644
--- a/application/index/controller/Ajax.php
+++ b/application/index/controller/Ajax.php
@@ -21,6 +21,7 @@ class Ajax extends Frontend
      */
     public function lang()
     {
+        \think\Config::set('app_trace', false);
         header('Content-Type: application/javascript');
         $callback = $this->request->get('callback');
         $controllername = input("controllername");