diff --git a/components/serializer.rst b/components/serializer.rst
index ea6d32f5770..aa684c8bee6 100644
--- a/components/serializer.rst
+++ b/components/serializer.rst
@@ -814,9 +814,7 @@ Here, we set it to 2 for the ``$child`` property:
                 http://symfony.com/schema/dic/serializer-mapping/serializer-mapping-1.0.xsd"
         >
             <class name="Acme\MyObj">
-                <attribute name="foo">
-                    <max-depth>2</max-depth>
-                </attribute>
+                <attribute name="foo" max-depth="2" />
         </serializer>
 
 The metadata loader corresponding to the chosen format must be configured in