diff --git a/src/manifest.json b/src/manifest.json
index 9f9db95..709a235 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -23,9 +23,6 @@
       "common/lib/browser-polyfill.js",
       "ext/uw.js"
     ],
-    "css": [
-      "ext/uw.css"
-    ],
     "all_frames": true
   }],