diff --git a/en/controllers/components/authentication.rst b/en/controllers/components/authentication.rst
index b9212ec3cf..94dd7bd96b 100644
--- a/en/controllers/components/authentication.rst
+++ b/en/controllers/components/authentication.rst
@@ -230,9 +230,7 @@ working with a login form could look like::
                 $this->Auth->setUser($user);
                 return $this->redirect($this->Auth->redirectUrl());
             } else {
-                $this->Flash->error(__('Username or password is incorrect'), [
-                    'key' => 'auth'
-                ]);
+                $this->Flash->error(__('Username or password is incorrect'));
             }
         }
     }