diff --git a/docs/topics/auth/default.txt b/docs/topics/auth/default.txt
index a1c0e32ce0..1af4951356 100644
--- a/docs/topics/auth/default.txt
+++ b/docs/topics/auth/default.txt
@@ -1298,7 +1298,8 @@ implementation details see :ref:`using-the-views`.
       link. By default, HTML email is not sent.
 
     * ``extra_email_context``: A dictionary of context data that will be
-      available in the email template.
+      available in the email template. It can be used to override default
+      template context values listed below e.g. ``domain``.
 
     **Template context:**