diff --git a/src/Controller/UserController.php b/src/Controller/UserController.php
index 805b752..a6ebbbb 100644
--- a/src/Controller/UserController.php
+++ b/src/Controller/UserController.php
@@ -210,7 +210,7 @@ class UserController implements ISecured
         return new JsonContent(['success' => true]);
     }
 
-    private function confirmUserIdentity(User $user, ?DateTime $authenticatedWithGoogleUntil, ?string $password, string &$error): bool
+    private function confirmUserIdentity(User $user, ?DateTime $authenticatedWithGoogleUntil, ?string $password, ?string &$error): bool
     {
         if ($authenticatedWithGoogleUntil !== null && $authenticatedWithGoogleUntil > new DateTime()) {
             return true;