diff --git a/lib/TTCrud/TTCrud.php b/lib/TTCrud/TTCrud.php
index b76bbad8e..a99a81c20 100644
--- a/lib/TTCrud/TTCrud.php
+++ b/lib/TTCrud/TTCrud.php
@@ -21,6 +21,11 @@ class TTCrud extends mfBaseController {
     /** @noinspection PhpMissingFieldTypeInspection */
     public $model;
 
+    public function __construct($request) {
+        parent::__construct($request);
+        session_write_close();
+    }
+
     protected function init() {
         $this->needlogin = true;
         $me = new User();