diff --git a/package.json b/package.json
index f6e769f..d263bdf 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "main": "bin/index.js",
   "scripts": {
     "demo": "./node_modules/.bin/babel-node Demo.js",
-    "prettier": "prettier --single-quote --trailing-comma es5 --write '{src,bin}/**/*.js'",
+    "prettier": "prettier --single-quote --trailing-comma es5 --write 'src/**/*.js'",
     "build": "./node_modules/.bin/babel src -d bin"
   },
   "repository": {