diff --git a/Makefile b/Makefile
index d84bd9a..8f961ec 100644
--- a/Makefile
+++ b/Makefile
@@ -9,7 +9,7 @@ install:
 
 test:
 	@NODE_ENV=test ./node_modules/mocha/bin/mocha \
-		--harmony-generators \
+		--harmony \
 		--reporter $(REPORTER) \
 		--timeout $(TIMEOUT) \
 		--require should \
diff --git a/test/support/server.js b/test/support/server.js
index fa60bd4..eb83cc1 100644
--- a/test/support/server.js
+++ b/test/support/server.js
@@ -5,7 +5,7 @@ var http = require('http');
 var session = require('koa-sess');
 var githubAuth = require('../../');
 
-var app = koa();
+var app = new koa();
 
 app.name = 'nae-web';
 app.keys = ['key1', 'key2'];