diff --git a/less/button-groups.less b/less/button-groups.less
index 4b0523df29..d8957c52d7 100644
--- a/less/button-groups.less
+++ b/less/button-groups.less
@@ -133,7 +133,8 @@
 .btn-primary,
 .btn-danger,
 .btn-info,
-.btn-success {
+.btn-success,
+.btn-dark {
   .caret {
     border-top-color: @white;
     .opacity(75);