diff --git a/actions/memberRegistration.js b/actions/memberRegistration.js
index 825c8d122..f95e0e1f4 100644
--- a/actions/memberRegistration.js
+++ b/actions/memberRegistration.js
@@ -396,7 +396,7 @@ var registerUser = function (user, api, dbConnectionMap, next) {
 				function (callback) {
                     var url;
                     url = process.env.TC_ACTIVATION_SERVER_NAME + '/reg2/activate.action?code=' + activationCode;
-                    if (regSource && regSource.match(/arena/)) {
+                    if (user.regSource && user.regSource.match(/arena/)) {
                       url += '&destination=http%3A%2F%2Farena.topcoder.com';
                     }
                     api.log("Activation url: " + url, "debug");