diff --git a/lib/nav.php b/lib/nav.php
index beac858..361329c 100644
--- a/lib/nav.php
+++ b/lib/nav.php
@@ -80,7 +80,7 @@ function roots_nav_menu_args($args = '') {
     $roots_nav_menu_args['items_wrap'] = '<ul class="%2$s">%3$s</ul>';
   }
 
-  if (current_theme_supports('bootstrap-top-navbar')) {
+  if (current_theme_supports('bootstrap-top-navbar') && !$args['depth']) {
     $roots_nav_menu_args['depth'] = 2;
   }