diff --git a/chrome/content/zotero-platform/mac/overlay.css b/chrome/content/zotero-platform/mac/overlay.css
index 7d9898d854..001ef8be24 100644
--- a/chrome/content/zotero-platform/mac/overlay.css
+++ b/chrome/content/zotero-platform/mac/overlay.css
@@ -128,7 +128,6 @@
 	-moz-box-orient: vertical;
 	-moz-box-align: center;
 	-moz-appearance: toolbarbutton;
-	-moz-user-focus: none;
 	text-align: center;
 	margin: 0;
 	padding: 3px 1px 3px 1px;