diff --git a/test/unit/test.express.js b/test/unit/test.express.js
index a62f2eb..7d6b8ed 100644
--- a/test/unit/test.express.js
+++ b/test/unit/test.express.js
@@ -24,7 +24,13 @@ const app = require('../../app');
 
 
 describe('express', () => {
-  it('load home page when GET /', () => request(app).get('/').expect(200));
+  it('load home page when GET /', () => {
+    request(app).get('/').expect(200);
+  });
 
-  it('404 when page not found', () => request(app).get('/foo/bar').expect(404));
+  it('404 when page not found', () => {
+    request(app)
+      .get('/foo/bar')
+      .expect(new Error('Not Found'));
+  });
 });