diff --git a/api/modules/authserver/models/ValidateForm.php b/api/modules/authserver/models/ValidateForm.php
index 75370e2..bff97ae 100644
--- a/api/modules/authserver/models/ValidateForm.php
+++ b/api/modules/authserver/models/ValidateForm.php
@@ -26,7 +26,6 @@ class ValidateForm extends ApiForm {
         }
 
         if ($result->isExpired()) {
-            $result->delete();
             throw new ForbiddenOperationException('Token expired.');
         }