Index: /branches/rel_avx_2_7_3/src/webui/webui/htdocs/new/src/client/app/modules/system/submenu/general/ntp/ntp.controller.js
===================================================================
--- /branches/rel_avx_2_7_3/src/webui/webui/htdocs/new/src/client/app/modules/system/submenu/general/ntp/ntp.controller.js	(revision 8978)
+++ /branches/rel_avx_2_7_3/src/webui/webui/htdocs/new/src/client/app/modules/system/submenu/general/ntp/ntp.controller.js	(working copy)
@@ -278,7 +278,7 @@
                 });
             };
             $scope.$watch('ntpKey.data.auth_key', function (now, old) {
-                var re = /^[^\s]+$/;
+                var re = /^[^\s]*$/;
                 if (!re.test(now)) {
                     ntpKeyModel.data.auth_key = old;
                 }