diff --git a/docs/assets/css/bootstrap.css b/docs/assets/css/bootstrap.css
index d6326a156f..ab6059ad01 100644
--- a/docs/assets/css/bootstrap.css
+++ b/docs/assets/css/bootstrap.css
@@ -2433,7 +2433,7 @@ table .span24 {
   *z-index: 1000;
 }
 
-.open .dropdown-menu {
+.open > .dropdown-menu {
   display: block;
 }
 
diff --git a/less/dropdowns.less b/less/dropdowns.less
index 2bcd556879..96dfec2237 100644
--- a/less/dropdowns.less
+++ b/less/dropdowns.less
@@ -103,7 +103,7 @@
   // make the menu appear below buttons that appeared later on the page
   *z-index: @zindexDropdown;
 
-  .dropdown-menu {
+  & > .dropdown-menu {
     display: block;
   }
 }