diff --git a/docs/services/google_analytics_gtag.rst b/docs/services/google_analytics_gtag.rst
index ae94625..c9ff31d 100644
--- a/docs/services/google_analytics_gtag.rst
+++ b/docs/services/google_analytics_gtag.rst
@@ -96,7 +96,9 @@ Identifying authenticated users
 The username of an authenticated user is passed to Google Analytics
 automatically as the `user_id`.  See :ref:`identifying-visitors`.
 
-According to `Google Analytics conditions <https://developers.google.com/analytics/solutions/crm-integration#user_id>`_
+According to `Google Analytics conditions`_ you should avoid ...
+
+.. _`Google Analytics conditions`: https://developers.google.com/analytics/solutions/crm-integration#user_id
 you should avoid sending Personally Identifiable Information.
 Using `username` as `user_id` might not be the best option.
 To avoid that, you can change the identity