diff --git a/public/css/icinga/defaults.less b/public/css/icinga/defaults.less
index f2db2ad50..5b5a0f805 100644
--- a/public/css/icinga/defaults.less
+++ b/public/css/icinga/defaults.less
@@ -72,7 +72,7 @@ a {
   @colorMainLink;
   text-decoration: none;
 
-  :hover {
+  &:hover {
     text-decoration: underline;
   }
 }