diff --git a/Firefox/package.json b/Firefox/package.json
index 7b59bee..42a6d88 100644
--- a/Firefox/package.json
+++ b/Firefox/package.json
@@ -1,11 +1,12 @@
 {
   "name": "fb-fixed-navbar",
   "title": "FB-fixed-navbar",
-  "id": "jid1-9prtREtF6cjLPA",
+  "id": "jid1-9prtREtF6cjLPA@jetpack",
   "description": "Freezes left navigation pane on Facebook",
   "author": "Philipp Schirmer",
   "license": "MPL 2.0",
   "version": "1.1.5",
+  "main": "lib/main.js",
   "preferences": [{
     "name": "useScrollbar",
     "title": "Use scrollbar",