diff --git a/src/ng/filter/filters.js b/src/ng/filter/filters.js
index c56210f67b0d..af29c75a6f2d 100644
--- a/src/ng/filter/filters.js
+++ b/src/ng/filter/filters.js
@@ -320,7 +320,7 @@ dateFilter.$inject = ['$locale'];
 function dateFilter($locale) {
 
 
-  var R_ISO8601_STR = /^(\d{4})-?(\d\d)-?(\d\d)(?:T(\d\d)(?::?(\d\d)(?::?(\d\d)(?:\.(\d{3}))?)?)?(Z|([+-])(\d\d):?(\d\d)))?$/;
+  var R_ISO8601_STR = /^(\d{4})-?(\d\d)-?(\d\d)(?:T(\d\d)(?::?(\d\d)(?::?(\d\d)(?:\.(\d{3}))?)?)?(Z|([+-])(\d\d):?(\d\d))?)?$/;
   function jsonStringToDate(string){
     var match;
     if (match = string.match(R_ISO8601_STR)) {