diff --git a/configs/default.js b/configs/default.js
index 306e39e07ab..2dc44b4a28d 100644
--- a/configs/default.js
+++ b/configs/default.js
@@ -177,7 +177,8 @@ var config = {
             },
             "./cloud9.ide.shell",
             "./cloud9.ide.state",
-            "./cloud9.ide.watcher"
+            "./cloud9.ide.watcher",
+            "./cloud9.sandbox.fs"
             ]
         }
     }