diff --git a/cookbook/doctrine/file_uploads.rst b/cookbook/doctrine/file_uploads.rst
index b68806f59d4..ab52ae4c940 100644
--- a/cookbook/doctrine/file_uploads.rst
+++ b/cookbook/doctrine/file_uploads.rst
@@ -181,7 +181,7 @@ rules::
 
     .. code-block:: xml
 
-        <!-- src/AppBundle/Resources/config/validation.yml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <class name="AppBundle\Entity\Document">
             <property name="file">
                 <constraint name="File">