diff --git a/package.json b/package.json
index ad27bb905..d3261af9c 100644
--- a/package.json
+++ b/package.json
@@ -146,7 +146,7 @@
     ]
   },
   "homepage": "http://markojs.com/",
-  "version": "4.3.0",
+  "version": "4.3.1",
   "logo": {
     "url": "https://raw.githubusercontent.com/marko-js/branding/master/marko-logo-small.png"
   }
diff --git a/src/express.js b/src/express.js
index b729a9bd6..c8bd4c13f 100644
--- a/src/express.js
+++ b/src/express.js
@@ -44,6 +44,6 @@ function patchResponse(response) {
 
         res.set({ 'content-type': 'text/html; charset=utf-8' });
 
-        template.render(data, res);
+        return template.render(data, res);
     };
 }
diff --git a/test/autotests/express/return-promise/template.marko b/test/autotests/express/return-promise/template.marko
new file mode 100644
index 000000000..7c89b545c
--- /dev/null
+++ b/test/autotests/express/return-promise/template.marko
@@ -0,0 +1 @@
+<div></div>
diff --git a/test/autotests/express/return-promise/test.js b/test/autotests/express/return-promise/test.js
new file mode 100644
index 000000000..f82c28db4
--- /dev/null
+++ b/test/autotests/express/return-promise/test.js
@@ -0,0 +1,28 @@
+'use strict';
+
+let fulfilled = false;
+
+exports.createApp = function(express, markoExpressPath) {
+    var app = express();
+    var markoExpress = require(markoExpressPath);
+
+    app.use(markoExpress());
+    return app;
+};
+
+exports.createController = function(template) {
+    return function(req, res) {
+        return res.marko(template)
+            .then(() => {
+                fulfilled = true;
+            })
+            .catch((err) => {
+                console.error('Error fulfilling res.marko: ', err);
+            });
+    };
+};
+
+exports.checkResponse = function(response, expect, helpers) {
+    expect(fulfilled).to.equal(true);
+    expect(response.body).to.equal('<div></div>');
+};
diff --git a/test/express-test.js b/test/express-test.js
index f0d8e190d..797ced8bf 100644
--- a/test/express-test.js
+++ b/test/express-test.js
@@ -3,6 +3,7 @@ require('./util/test-init');
 
 var chai = require('chai');
 chai.config.includeStack = true;
+const expect = chai.expect;
 var path = require('path');
 var marko = require('marko');
 var autotest = require('./autotest');
@@ -25,12 +26,12 @@ describe('express', function() {
 
             require(markoExpressPath);
 
-            chai.expect(express.response.marko).to.equal(fn);
+            expect(express.response.marko).to.equal(fn);
         });
         it('should be able to register for multiple express instances', function() {
             // test res.marko is added to the real express response
             require(markoExpressPath);
-            chai.expect(express.response.marko).to.be.a('function');
+            expect(express.response.marko).to.be.a('function');
 
             // set up an express mock object and hijack require
             var expressMock = { response:{} };
@@ -43,7 +44,7 @@ describe('express', function() {
 
             // check that res.marko is added to the mocked express response
             require(markoExpressPath);
-            chai.expect(expressMock.response.marko).to.be.a('function');
+            expect(expressMock.response.marko).to.be.a('function');
 
             // return require to its original state
             module.require = _require;
@@ -102,7 +103,7 @@ describe('express', function() {
                             if(main.checkResponse) {
                                 response.body = body;
                                 response.error = error;
-                                main.checkResponse(response, chai.expect, helpers);
+                                main.checkResponse(response, expect, helpers);
                             } else {
                                 if(error) {
                                     return done(error);