diff --git a/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_29.rst b/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_29.rst
index e1f2eabec..3bac0a937 100644
--- a/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_29.rst
+++ b/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_29.rst
@@ -26,7 +26,7 @@ Front-end changes
 Changed APIs
 ^^^^^^^^^^^^
 
-* `IAppConfig` has been fully reworked, most of previous methods are now deprecated. The new version of the API implements multiple settings for app config values to define their laziness and sensitivity.
+* `IAppConfig` has been fully reworked, most of previous methods are now deprecated. The new version of the API implements multiple settings for app config values to define their laziness and sensitivity. See also the :ref:`app config` section.
 
 Removed globals
 ^^^^^^^^^^^^^^^
diff --git a/developer_manual/digging_deeper/config/appconfig.rst b/developer_manual/digging_deeper/config/appconfig.rst
index c32c57670..e6be4bebe 100644
--- a/developer_manual/digging_deeper/config/appconfig.rst
+++ b/developer_manual/digging_deeper/config/appconfig.rst
@@ -1,3 +1,5 @@
+.. _app config:
+
 =========
 AppConfig
 =========