diff --git a/public/css/icinga/forms.less b/public/css/icinga/forms.less
index 42cccfec5..10be1ea4c 100644
--- a/public/css/icinga/forms.less
+++ b/public/css/icinga/forms.less
@@ -17,7 +17,7 @@ input {
 
 input.search {
   padding-left: 20px;
-  background: @gray-lightest url('../img/icons/search.png') no-repeat 2px;
+  background: transparent url('../img/icons/search.png') no-repeat 2px;
   background-size: 12px 12px;
 
   &:focus {