diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index d48bce578..d7088f6c3 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -384,6 +384,7 @@ var Zotero = new function(){
 			}
 			catch (e) {
 				if (typeof e == 'string' && e.match('newer than SQL file')) {
+					var kbURL = "http://zotero.org/support/kb/newer_db_version";
 					var msg = Zotero.localeJoin([
 							Zotero.getString('startupError.zoteroVersionIsOlder'),
 							Zotero.getString('startupError.zoteroVersionIsOlder.upgrade')