diff --git a/templating/twig_extension.rst b/templating/twig_extension.rst
index 5cc20ddbf71..013c02c83a8 100644
--- a/templating/twig_extension.rst
+++ b/templating/twig_extension.rst
@@ -134,8 +134,8 @@ previous ``priceFilter()`` method::
         }
     }
 
- .. versionadded:: 3.4
-     The ``RuntimeExtensionInterface`` was introduced in Symfony 3.4.
+.. versionadded:: 3.4
+    The ``RuntimeExtensionInterface`` was introduced in Symfony 3.4.
 
 If you're using the default ``services.yaml`` configuration, this will already
 work! Otherwise, :ref:`create a service <service-container-creating-service>`