diff --git a/www/common/outer/roster.js b/www/common/outer/roster.js
index ae07f9b1c..b9e2159f9 100644
--- a/www/common/outer/roster.js
+++ b/www/common/outer/roster.js
@@ -407,7 +407,7 @@ var factory = function (Util, Hash, CPNetflux, Sortify, nThen, Crypto) {
 
         var webChannel;
         roster.stop = function () {
-            if (ref.internal.cpNetflux && typeof(ref.internal.cpNetflux) === "function") {
+            if (ref.internal.cpNetflux && typeof(ref.internal.cpNetflux.stop) === "function") {
                 ref.internal.cpNetflux.stop();
                 clearPendingCheckpoints();
             } else {