diff --git a/static/css/theme.css b/static/css/theme.css
index f0d6253f71..d4dfdb7328 100644
--- a/static/css/theme.css
+++ b/static/css/theme.css
@@ -181,7 +181,6 @@ th {
 
 #sidebar ul.topics > li > a b {
     font-weight: 400;
-    opacity: 0.5;
 }
 
 #sidebar ul.topics > li > a .fa {