diff --git a/reference/constraints/Collection.rst b/reference/constraints/Collection.rst
index a296f68dc3e..80c87801356 100644
--- a/reference/constraints/Collection.rst
+++ b/reference/constraints/Collection.rst
@@ -207,7 +207,7 @@ you can do the following:
              *     }
              * )
              */
-            protected $profileData = ['personal_email'];
+            protected $profileData = ['personal_email' => 'email@example.com'];
         }
 
     .. code-block:: yaml