diff --git a/messenger.rst b/messenger.rst
index a6e64d8f94e..8a527c43c65 100644
--- a/messenger.rst
+++ b/messenger.rst
@@ -899,7 +899,7 @@ options. Options can be passed to the transport via a DSN string or configuratio
                         'dsn' => '%env(MESSENGER_TRANSPORT_DSN)%',
                         'options' => [
                             'auto_setup' => false,
-                        ]
+                        ],
                     ],
                 ],
             ],