diff --git a/public/css/icinga/widgets.less b/public/css/icinga/widgets.less
index 3518cbe40..385d5e3d4 100644
--- a/public/css/icinga/widgets.less
+++ b/public/css/icinga/widgets.less
@@ -614,6 +614,7 @@ ul.tree li a.error:hover {
   text-anchor: middle;
   &:hover {
     text-decoration: none;
+    opacity: 0.8;
   }
 }
 
@@ -663,4 +664,3 @@ ul.tree li a.error:hover {
 html.no-js .progress-label {
   display: none;
 }
-