diff --git a/package.json b/package.json
index 014aa02..501d97b 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "description": "An OnlineJudge System for OI",
   "main": "app.js",
   "scripts": {
-    "start": "node --harmony-async-await app.js",
+    "start": "node app.js",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "repository": {