diff --git a/package.json b/package.json
index 34c654e..7f49179 100644
--- a/package.json
+++ b/package.json
@@ -1,15 +1,21 @@
 {
   "name": "node-getopt",
   "version": "0.3.2",
-  "author" : "Jiang Miao <jiangfriend@gmail.com>",
+  "author": "Jiang Miao <jiangfriend@gmail.com>",
   "description": "featured command line args parser",
-  "keywords" : ["getopt", "arg", "parser"],
+  "keywords": [
+    "getopt",
+    "arg",
+    "parser"
+  ],
   "homepage": "https://github.com/jiangmiao/node-getopt",
   "license": "MIT",
-  "repository" : {
-    "type" : "git",
-    "url" : "https://github.com/jiangmiao/node-getopt"
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/jiangmiao/node-getopt"
   },
-  "main" : "./lib",
-  "engines" : { "node": ">= 0.6.0" }
-}
+  "main": "index.js",
+  "engines": {
+    "node": ">= 0.6.0"
+  }
+}
\ No newline at end of file