diff --git a/doc/source/install-guide-from-source.rst b/doc/source/install-guide-from-source.rst
index 241a3613f7..59a4e992fb 100644
--- a/doc/source/install-guide-from-source.rst
+++ b/doc/source/install-guide-from-source.rst
@@ -343,6 +343,18 @@ Install and configure components
 
 7. Edit the ``/etc/magnum/magnum.conf``:
 
+   * In the ``[DEFAULT]`` section,
+     configure ``RabbitMQ`` message queue access:
+
+     .. code-block:: ini
+
+        [DEFAULT]
+        ...
+        transport_url = rabbit://openstack:RABBIT_PASS@controller
+
+     Replace ``RABBIT_PASS`` with the password you chose for the
+     ``openstack`` account in ``RabbitMQ``.
+
    * In the ``[api]`` section, configure the host:
 
      .. code-block:: ini
@@ -447,20 +459,6 @@ Install and configure components
         ...
         driver = messaging
 
-   * In the ``[oslo_messaging_rabbit]`` section, configure RabbitMQ message
-     queue access:
-
-     .. code-block:: ini
-
-        [oslo_messaging_rabbit]
-        ...
-        rabbit_host = controller
-        rabbit_userid = openstack
-        rabbit_password = RABBIT_PASS
-
-     Replace RABBIT_PASS with the password you chose for the openstack account
-     in RabbitMQ.
-
    .. note::
 
       Make sure that ``/etc/magnum/magnum.conf`` still have the correct