diff --git a/src/app/user/controllers/UserController.php b/src/app/user/controllers/UserController.php
index 18b8d2a0eee8865c97fe475a8d6addf427860508..3d7b80654a6584be7afcf52d252aa2fa23df3266 100755
--- a/src/app/user/controllers/UserController.php
+++ b/src/app/user/controllers/UserController.php
@@ -163,7 +163,7 @@ class UserController
                 }
             }
         } else {
-            $body['signatureModes'] = [];
+            $body['signatureModes'] = ['stamp'];
         }
         $body['signatureModes'] = json_encode($body['signatureModes']);