diff --git a/midderwares/conf.js b/midderwares/conf.js
new file mode 100644
index 0000000..5796fa6
--- /dev/null
+++ b/midderwares/conf.js
@@ -0,0 +1,8 @@
+var config = require('../config').config;
+
+exports.github = function (req, res, next) {
+  if (config.GITHUB_OAUTH.clientID === 'your GITHUB_CLIENT_ID') {
+    return res.send('call the admin to set github oauth.');
+  }
+  next();
+};
\ No newline at end of file
diff --git a/routes.js b/routes.js
index 732e1e3..902a76f 100644
--- a/routes.js
+++ b/routes.js
@@ -24,6 +24,7 @@ var limit = require('./midderwares/limit');
 var status = require('./controllers/status');
 var github = require('./controllers/github');
 var passport = require('passport');
+var configMiddleware = require('./midderwares/conf');
 
 
 module.exports = function (app) {
@@ -121,7 +122,7 @@ module.exports = function (app) {
   app.get('/status', status.status);
 
   // github oauth
-  app.get('/auth/github', passport.authenticate('github'));
+  app.get('/auth/github', configMiddleware.github, passport.authenticate('github'));
   app.get('/auth/github/callback',
     passport.authenticate('github', { failureRedirect: '/signin' }),
     github.callback);