diff --git a/doc/source/install/install-rdo.rst b/doc/source/install/install-rdo.rst
index a58bca0649..a2f978e5f0 100644
--- a/doc/source/install/install-rdo.rst
+++ b/doc/source/install/install-rdo.rst
@@ -171,7 +171,12 @@ Install and configure components
      For more information, see the `list of time zones
      <https://en.wikipedia.org/wiki/List_of_tz_database_time_zones>`__.
 
+3. Add the following line to
+   ``/etc/httpd/conf.d/openstack-dashboard.conf`` if not included.
 
+   .. code-block:: none
+
+      WSGIApplicationGroup %{GLOBAL}
 
 Finalize installation
 ---------------------