diff --git a/devstack/lib/magnum b/devstack/lib/magnum
index 69f0d3181c..79bc90d30c 100644
--- a/devstack/lib/magnum
+++ b/devstack/lib/magnum
@@ -126,8 +126,7 @@ function create_magnum_conf {
     rm -f $MAGNUM_CONF
     HOSTNAME=`hostname`
     iniset $MAGNUM_CONF DEFAULT debug "$ENABLE_DEBUG_LOG_LEVEL"
-    iniset $MAGNUM_CONF DEFAULT transport_url \
-          "rabbit://$RABBIT_USERID:$RABBIT_PASSWORD@$RABBIT_HOST"
+    iniset $MAGNUM_CONF DEFAULT transport_url $(get_transport_url)
     iniset $MAGNUM_CONF DEFAULT host "$HOSTNAME"
 
     iniset $MAGNUM_CONF database connection `database_connection_url magnum`