diff --git a/src/Squidex/app/theme/_bootstrap.scss b/src/Squidex/app/theme/_bootstrap.scss
index 7c1c7fcf0..b08165ab0 100644
--- a/src/Squidex/app/theme/_bootstrap.scss
+++ b/src/Squidex/app/theme/_bootstrap.scss
@@ -92,6 +92,7 @@
         }
 
         .spacer {
+            border: 0;
             height: 6px;
         }
     }