diff --git a/thunderbird/manifest.merge.json b/thunderbird/manifest.merge.json
index 8e159a3debe2c5d6117814601b04c5f7311ed0d0..a1f47bc5d58625cb976c94c743b3092ef2fa598d 100644
--- a/thunderbird/manifest.merge.json
+++ b/thunderbird/manifest.merge.json
@@ -7,6 +7,7 @@
     },
     "background": {
         "scripts": [
+	    "menu.js",
             "background.js"
         ]
     },