diff --git a/less/button-groups.less b/less/button-groups.less
index 6a0c5a865..4f37c6b41 100644
--- a/less/button-groups.less
+++ b/less/button-groups.less
@@ -173,11 +173,13 @@
     border-radius: 0;
   }
   &:first-child:not(:last-child) {
+    border-top-left-radius: @btn-border-radius-base;
     border-top-right-radius: @btn-border-radius-base;
     .border-bottom-radius(0);
   }
   &:last-child:not(:first-child) {
     border-bottom-left-radius: @btn-border-radius-base;
+    border-bottom-right-radius: @btn-border-radius-base;
     .border-top-radius(0);
   }
 }