diff --git a/docs/en/reference/working-with-associations.rst b/docs/en/reference/working-with-associations.rst
index 7e088f944..0768c3ede 100644
--- a/docs/en/reference/working-with-associations.rst
+++ b/docs/en/reference/working-with-associations.rst
@@ -453,7 +453,7 @@ following code:
     $user->addComment($myFirstComment);
     
     $em->persist($user);
-    $em->persist($myFirstComment); // mandatory if `cascade: persist` isn't set
+    $em->persist($myFirstComment); // required, if `cascade: persist` isn't set
     $em->flush();
 
 Even if you *persist* a new User that contains our new Comment this