diff --git a/chrome/content/zotero/about.xhtml b/chrome/content/zotero/about.xhtml
index 12547bd31d..e52a879d7a 100644
--- a/chrome/content/zotero/about.xhtml
+++ b/chrome/content/zotero/about.xhtml
@@ -7,7 +7,8 @@
 
 <window
 	xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
-	onload="moveToAlertPosition(); sizeToContent(); document.getElementById('zotero-about').getButton('accept').focus();">
+	onload="moveToAlertPosition(); sizeToContent(); document.getElementById('zotero-about').getButton('accept').focus();"
+	inwindowmenu="false">
 <dialog
 		id="zotero-about"
 		buttons="accept"
@@ -85,4 +86,4 @@
 		</vbox>
 	</vbox>
 </dialog>
-</window>
\ No newline at end of file
+</window>