diff --git a/b2g/chrome/content/shell.js b/b2g/chrome/content/shell.js
index a8b35099357c..1175df06ed2b 100644
--- a/b2g/chrome/content/shell.js
+++ b/b2g/chrome/content/shell.js
@@ -526,7 +526,8 @@ var shell = {
       url: msg.uri,
       manifestURL: msg.manifest,
       isActivity: (msg.type == 'activity'),
-      target: msg.target
+      target: msg.target,
+      expectingSystemMessage: true
     });
   },