diff --git a/static/styles/left-sidebar.css b/static/styles/left-sidebar.css
index c4b62393b6..5b76ac0591 100644
--- a/static/styles/left-sidebar.css
+++ b/static/styles/left-sidebar.css
@@ -202,13 +202,13 @@ ul.filters .topic-sidebar-arrow {
     display: none !important;
 }
 
-ul.filters li.topic-list-item:hover .topic-sidebar-arrow {
+li.topic-list-item:hover .topic-sidebar-arrow {
     display: inline !important;
     cursor: pointer;
     color: #888;
 }
 
-ul.filters li.topic-list-item .topic-sidebar-arrow:hover {
+li.topic-list-item .topic-sidebar-arrow:hover {
     display: inline;
     cursor: pointer;
     color: #000;