diff --git a/form/form_collections.rst b/form/form_collections.rst
index 783dcf785f7..7c9147e81b4 100644
--- a/form/form_collections.rst
+++ b/form/form_collections.rst
@@ -474,7 +474,7 @@ you will learn about next!).
 
         .. code-block:: yaml
 
-            # src/Resources/config/doctrine/Task.orm.yml
+            # src/Resources/config/doctrine/Task.orm.yaml
             App\Entity\Task:
                 type: entity
                 # ...