diff --git a/less/button-groups.less b/less/button-groups.less
index d236dcb8d8..c253576225 100644
--- a/less/button-groups.less
+++ b/less/button-groups.less
@@ -19,7 +19,7 @@
   }
 }
 .dropup {
-  & .btn-default .caret {
+  .btn-default .caret {
     border-bottom-color: @btn-default-color;
   }
   .btn-primary,