diff --git a/package.json b/package.json
index fc7dcd080..5dde6555b 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "sls": "./bin/serverless"
   },
   "scripts": {
-    "test-bare": "mocha '!(node_modules)/**/*.test.js'",
+    "test-bare": "mocha \"!(node_modules)/**/*.test.js\"",
     "test-isolated": "node scripts/test-isolated.js",
     "test": "nyc --reporter=lcov --reporter=html --reporter=text-summary npm run test-bare",
     "lint": "eslint . --cache",