diff --git a/src/browser/base/content/zen-styles/zen-tabs/vertical-tabs.css b/src/browser/base/content/zen-styles/zen-tabs/vertical-tabs.css
index b0edff683..3b49a8320 100644
--- a/src/browser/base/content/zen-styles/zen-tabs/vertical-tabs.css
+++ b/src/browser/base/content/zen-styles/zen-tabs/vertical-tabs.css
@@ -224,7 +224,7 @@
   }
   
   #tabbrowser-arrowscrollbox {
-    margin: 3px 0;
+    margin: 3px 0 !important;
   }
   
   #alltabs-button stack {