diff --git a/lib/utils/routes.js b/lib/utils/routes.js
index 21460068a9..5bb6ff2c62 100644
--- a/lib/utils/routes.js
+++ b/lib/utils/routes.js
@@ -28,17 +28,17 @@ function routes(server) {
     createReadStream(join(clientBasePath, 'index.bundle.js')).pipe(res);
   });
 
+  app.get('/webpack-dev-server/invalidate', (_req, res) => {
+    server.invalidate();
+    res.end();
+  });
+
   app.get('/webpack-dev-server/*', (req, res) => {
     res.setHeader('Content-Type', 'text/html');
 
     createReadStream(join(clientBasePath, 'live.html')).pipe(res);
   });
 
-  app.get('/invalidate', (_req, res) => {
-    server.invalidate();
-    res.end();
-  });
-
   app.get('/webpack-dev-server', (req, res) => {
     res.setHeader('Content-Type', 'text/html');
 
diff --git a/test/server/utils/routes.test.js b/test/server/utils/routes.test.js
index afe5dd40a2..ce2eea7044 100644
--- a/test/server/utils/routes.test.js
+++ b/test/server/utils/routes.test.js
@@ -64,8 +64,12 @@ describe('routes util', () => {
     });
   });
 
-  it('GET request to invalidate endpoint', (done) => {
-    req.get('/invalidate').expect(200, done);
+  it('should handles GET request to invalidate endpoint', (done) => {
+    req.get('/webpack-dev-server/invalidate').then(({ res }) => {
+      expect(res.headers['content-type']).not.toEqual('text/html');
+      expect(res.statusCode).toEqual(200);
+      done();
+    });
   });
 
   it('should handles GET request to live html', (done) => {