diff --git a/configuration.rst b/configuration.rst
index 62650fc1d38..fffcf9501a9 100644
--- a/configuration.rst
+++ b/configuration.rst
@@ -291,7 +291,7 @@ configuration file using a special syntax: wrap the parameter name in two ``%``
     by adding another ``%`` so Symfony doesn't consider it a reference to a
     parameter name:
 
-        .. configuration-block::
+    .. configuration-block::
 
         .. code-block:: yaml