diff --git a/.env b/.env
index 753977e..56e688b 100644
--- a/.env
+++ b/.env
@@ -1,2 +1,2 @@
 NODE_ENV=production
-DEBUG="webot:* -*:verbose"
+DEBUG="webot-example:* -*:verbose"
diff --git a/Makefile b/Makefile
index 91695d2..3329b7d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,3 @@
 start:
-	@export DEBUG=weixin:*
+	@export DEBUG=webot-example:*
 	@npm start
diff --git a/app.js b/app.js
index e2a8129..e40f646 100644
--- a/app.js
+++ b/app.js
@@ -1,8 +1,8 @@
 var express = require('express');
 var webot = require('weixin-robot');
 
-var log = require('debug')('webot:log');
-var verbose = require('debug')('webot:verbose');
+var log = require('debug')('webot-example:log');
+var verbose = require('debug')('webot-example:verbose');
 
 //启动服务
 var app = express();
@@ -29,5 +29,5 @@ app.enable('trust proxy');
 // app.listen(80);
 
 if(!process.env.DEBUG){
-  console.log("set env variable `DEBUG=webot:*` to display debug info.");
+  console.log("set env variable `DEBUG=webot-example:*` to display debug info.");
 }
diff --git a/package.json b/package.json
index aa06a36..d04e3e5 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,7 @@
   "main": "app.js",
   "dependencies": {
     "express": "~3.0",
+    "underscore": "~1.4",
     "debug": "~0.7.2",
     "weixin-robot": "~0.2.3"
   },
diff --git a/rules.js b/rules.js
index 4a474f0..b1936b1 100644
--- a/rules.js
+++ b/rules.js
@@ -1,9 +1,9 @@
 var crypto = require('crypto');
 
 var debug = require('debug');
-var log = debug('webot:log');
-var verbose = debug('webot:verbose');
-var error = debug('webot:error');
+var log = debug('webot-example:log');
+var verbose = debug('webot-example:verbose');
+var error = debug('webot-example:error');
 
 var _ = require('underscore')._;
 var search = require('./support').search;
diff --git a/support.js b/support.js
index ea87818..998c2e5 100644
--- a/support.js
+++ b/support.js
@@ -1,5 +1,5 @@
 var debug = require('debug');
-var log = debug('webot:example');
+var log = debug('webot-example:log');
 
 var _ = require('underscore')._;
 var request = require('request');