diff --git a/components/config/definition.rst b/components/config/definition.rst
index 67173a0ce90..82feda36aaf 100644
--- a/components/config/definition.rst
+++ b/components/config/definition.rst
@@ -403,7 +403,7 @@ has a certain value:
     (``null``, ``true``, ``false``), provide a replacement value in case
     the value is ``*.``
 
-.. code-block:: php
+The following example shows these methods in practice::
 
     $rootNode
         ->children()