diff --git a/package.json b/package.json
index 28b2870525f9..ad4e5e3581f9 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "locale"
   ],
   "sideEffects": [
-    "*.less"
+    "*.css"
   ],
   "main": "lib/index.js",
   "module": "es/index.js",