diff --git a/app/assets/stylesheets/zammad.css.scss b/app/assets/stylesheets/zammad.css.scss
index 5d234cba8..767b35afa 100644
--- a/app/assets/stylesheets/zammad.css.scss
+++ b/app/assets/stylesheets/zammad.css.scss
@@ -5043,7 +5043,7 @@ label + .wizard-buttonList {
 }
 
 .highlighter {
-  @extend .horizontal;
+  display: flex;
 }
 
 [data-highlightcolor=Yellow]::selection { background: #f7e7b2; }