diff --git a/agaric/templates/block/block--system-menu-block--main.html.twig b/agaric/templates/block/block--system-menu-block--main.html.twig
index a71ce83..88d5789 100644
--- a/agaric/templates/block/block--system-menu-block--main.html.twig
+++ b/agaric/templates/block/block--system-menu-block--main.html.twig
@@ -3,7 +3,6 @@
 {%
   set classes = [
     'navbar-end',
-    'navbar',
   ]
 %}