diff --git a/manifest.json b/manifest.json
index c9a5da5..72a5995 100644
--- a/manifest.json
+++ b/manifest.json
@@ -7,7 +7,8 @@
   "description": "Replaces the thumb up and down in YouTube with a Witzig! and a Nicht Witzig! stamp.",
 
   "icons": {
-    "48": "icons/witzig-48.png"
+    "72": "media/icon-witzig-72.png",
+    "228": "media/icon-witzig-228.png"
   },
 
   "content_scripts": [