diff --git a/add-on/manifest.firefox.json b/add-on/manifest.firefox.json
index 30d74bb1d..a57e25cc9 100644
--- a/add-on/manifest.firefox.json
+++ b/add-on/manifest.firefox.json
@@ -18,7 +18,7 @@
     "default_title": "__MSG_pageAction_titleNonIpfs__",
     "default_popup": "dist/popup/page-action/index.html"
   },
-  "content_scripts": null,
+  "content_scripts": [ ],
   "protocol_handlers": [
     {
       "protocol": "web+dweb",