diff --git a/src/core.js b/src/core.js
index fd19d7596..7db0a8c9b 100644
--- a/src/core.js
+++ b/src/core.js
@@ -1221,7 +1221,7 @@ var userAgent = navigator.userAgent.toLowerCase();
 
 // Figure out what browser is being used
 jQuery.browser = {
-	version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [])[1],
+	version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [0,'0'])[1],
 	safari: /webkit/.test( userAgent ),
 	opera: /opera/.test( userAgent ),
 	msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),