diff --git a/build/less/sidebar.less b/build/less/sidebar.less
index 3a451d719..541428782 100644
--- a/build/less/sidebar.less
+++ b/build/less/sidebar.less
@@ -121,7 +121,7 @@
     margin-right: 10px;
   }
   li.active {
-    > a > .fa-angle-left
+    > a > .fa-angle-left,
     > a > .pull-right-container > .fa-angle-left {
       .rotate(-90deg);
     }