diff --git a/platform/firefox/manifest.json b/platform/firefox/manifest.json
index 0fbab4a4a..e47fbebe5 100644
--- a/platform/firefox/manifest.json
+++ b/platform/firefox/manifest.json
@@ -65,7 +65,9 @@
   "description": "__MSG_extShortDesc__",
   "icons": {
     "16": "img/ublock.svg",
+    "32": "img/ublock.svg",
     "48": "img/ublock.svg",
+    "64": "img/ublock.svg",
     "96": "img/ublock.svg"
   },
   "manifest_version": 2,