diff --git a/src/browser/StatusBarProxy.js b/src/browser/StatusBarProxy.js
index 3e90c6c..3290d58 100644
--- a/src/browser/StatusBarProxy.js
+++ b/src/browser/StatusBarProxy.js
@@ -22,7 +22,9 @@ function notSupported(win,fail) {
     //
     console.log('StatusBar is not supported');
     setTimeout(function(){
-        win();
+        if (win) {
+            win();
+        }
         // note that while it is not explicitly supported, it does not fail
         // this is really just here to allow developers to test their code in the browser
         // and if we fail, then their app might as well. -jm