diff --git a/public/css/module.less b/public/css/module.less
index 604d44bb8..438c397c4 100644
--- a/public/css/module.less
+++ b/public/css/module.less
@@ -1656,13 +1656,13 @@ ul.filter-root {
 }
 
 
-li.filter-chain > select.operator {
+form.director-form li.filter-chain > select.operator {
     min-width: 5em;
     max-width: 5em;
     width: 5em;
 }
 
-div.filter-expression {
+form.director-form div.filter-expression {
     .column {
         min-width: 7em;
         max-width: 30em;
@@ -1705,7 +1705,6 @@ ul.director-suggestions {
   overflow-y: auto;
   overflow-x: hidden;
   border: 1px solid @icinga-blue;
-  border-top: none;
   position: absolute;
   z-index: 2000;
   padding: 0;