diff --git a/less/mixins/buttons.less b/less/mixins/buttons.less
index d7f7cd97a228..bfcb04edde87 100644
--- a/less/mixins/buttons.less
+++ b/less/mixins/buttons.less
@@ -12,14 +12,14 @@
   &:focus,
   &:active,
   &.active,
-  .open .dropdown-toggle& {
+  & ~ .open .dropdown-toggle& {
     color: @color;
-    background-color: darken(@background, 10%);
+    background-color: darken(@background, 8%);
         border-color: darken(@border, 12%);
   }
   &:active,
   &.active,
-  .open .dropdown-toggle& {
+  & ~ .open .dropdown-toggle& {
     background-image: none;
   }
   &.disabled,