diff --git a/devstack/lib/magnum b/devstack/lib/magnum
index 19d0af6f6c..e5dc46f357 100644
--- a/devstack/lib/magnum
+++ b/devstack/lib/magnum
@@ -147,7 +147,7 @@ function create_magnum_conf {
         setup_colorized_logging $MAGNUM_CONF DEFAULT
     else
         # Show user_name and project_name instead of user_id and project_id
-        iniset $MAGNUM_CONF DEFAULT logging_context_format_string "%(asctime)s.%(msecs)03d %(levelname)s %(name)s [%(request_id)s %(user_name)s %(project_name)s] %(instance)s%(message)s"
+        iniset $MAGNUM_CONF DEFAULT logging_context_format_string "%(asctime)s.%(msecs)03d %(levelname)s %(name)s [%(request_id)s %(user)s %(project)s] %(instance)s%(message)s"
     fi
 
     # Register SSL certificates if provided