diff --git a/less/dropdowns.less b/less/dropdowns.less
index e83915dba5..21a029b435 100644
--- a/less/dropdowns.less
+++ b/less/dropdowns.less
@@ -172,7 +172,7 @@
      -moz-border-radius: 0 6px 6px 6px;
           border-radius: 0 6px 6px 6px;
 }
-.dropdown-submenu:hover .dropdown-menu {
+.dropdown-submenu:hover > .dropdown-menu {
   display: block;
 }