diff --git a/package.json b/package.json
index 323fe214..8e261bff 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
         "build": "npm run start",
         "test": "npm run test-400",
         "start-test-server": "node backend.js &",
-        "test-400": "test.js"
+        "test-400": "node test.js"
     },
     "keywords": [
         "proxy",