diff --git a/theme/bootstrapbase/less/moodle/responsive.less b/theme/bootstrapbase/less/moodle/responsive.less
index d4934b0..f3fa81d 100644
--- a/theme/bootstrapbase/less/moodle/responsive.less
+++ b/theme/bootstrapbase/less/moodle/responsive.less
@@ -434,8 +434,10 @@
         .dropdown-submenu a:active,
         .dropdown-menu > li > a:hover,
         .dropdown-menu > li > a:focus,
+        .dropdown-submenu:hover > a,
+        .dropdown-submenu:focus > a
         {
-            background-image: none;
+            background-image: none !important;
             color: @grayDark;
         }
     }