diff --git a/app/assets/stylesheets/application/topic-post.css.scss b/app/assets/stylesheets/application/topic-post.css.scss
index e42e00d68..bf90a92f2 100644
--- a/app/assets/stylesheets/application/topic-post.css.scss
+++ b/app/assets/stylesheets/application/topic-post.css.scss
@@ -358,7 +358,7 @@
       }
 
       .staff a {
-        border-radius-all(3px);
+        @include border-radius-all(3px);
         padding: 1px 3px;
         background-color: #ffe;
         border: 1px solid #ffd;