diff --git a/configuration.rst b/configuration.rst
index 6d2638008fa..d1ae76084a1 100644
--- a/configuration.rst
+++ b/configuration.rst
@@ -52,6 +52,8 @@ to change these files after package installation
     :doc:`Symfony Configuration Reference </reference/index>` or run the
     ``config:dump-reference`` command.
 
+.. _configuration-formats:
+
 Configuration Formats
 ~~~~~~~~~~~~~~~~~~~~~
 
diff --git a/routing.rst b/routing.rst
index 1d72af7bbe5..25ee1c2abe6 100644
--- a/routing.rst
+++ b/routing.rst
@@ -183,11 +183,11 @@ the ``BlogController``:
             ;
         };
 
-.. versionadded:: 5.1
+.. note::
 
-    Starting from Symfony 5.1, by default Symfony only loads the routes defined
-    in YAML format. If you define routes in XML and/or PHP formats, update the
-    ``src/Kernel.php`` file to add support for the ``.xml`` and ``.php`` file extensions.
+    By default Symfony only loads the routes defined in YAML format. If you
+    define routes in XML and/or PHP formats, you need to
+    :ref:`update the ``src/Kernel.php`` file <configuration-formats>`.
 
 .. _routing-matching-http-methods: