diff --git a/core/modules/system/templates/menu.html.twig b/core/modules/system/templates/menu.html.twig
index 03704f2..01fa7ea 100644
--- a/core/modules/system/templates/menu.html.twig
+++ b/core/modules/system/templates/menu.html.twig
@@ -4,7 +4,8 @@
  * Default theme implementation to display a menu.
  *
  * Available variables:
- * - menu_name: The machine name of the menu.
+ * - menu_name: The machine name of the menu (if needed within macro like items,
+ *   pass it too into the macro as an argument).
  * - items: A nested list of menu items. Each menu item contains:
  *   - attributes: HTML attributes for the menu item.
  *   - below: The menu item child items.