diff --git a/test/test.js b/test/test.js
index 95591ea..ee0b932 100755
--- a/test/test.js
+++ b/test/test.js
@@ -31,6 +31,7 @@ describe('Application life cycle test', function () {
     this.timeout(0);
     var server, browser = new Builder().forBrowser('chrome').build();
     var LOCATION = 'test';
+    var SSH_PORT = 29420;
     var repodir = '/tmp/testrepo';
     var app, reponame = 'testrepo';
     var username = process.env.USERNAME;
@@ -210,7 +211,7 @@ return done();
         }).then(function () {
             return browser.findElement(by.id('repo-clone-url')).getAttribute('value');
         }).then(function (cloneUrl) {
-            expect(cloneUrl).to.be('ssh://git@' + app.fqdn + ':29418/' + username + '/' + reponame + '.git');
+            expect(cloneUrl).to.be(`ssh://git@${app.fqdn}:${SSH_PORT}/${username}/${reponame}.git`);
             done();
         });
     }
@@ -219,14 +220,14 @@ return done();
         rimraf.sync(repodir);
         var env = Object.create(process.env);
         env.GIT_SSH = __dirname + '/git_ssh_wrapper.sh';
-        execSync('git clone ssh://git@' + app.fqdn + ':29418/' + username + '/' + reponame + '.git ' + repodir, { env: env });
+        execSync(`git clone ssh://git@${app.fqdn}:${SSH_PORT}/${username}/${reponame}.git ${repodir}`, { env: env });
         done();
     }
 
     function pushFile(done) {
         var env = Object.create(process.env);
         env.GIT_SSH = __dirname + '/git_ssh_wrapper.sh';
-        execSync('touch newfile && git add newfile && git commit -a -mx && git push ssh://git@' + app.fqdn + ':29418/' + username + '/' + reponame + ' master',
+        execSync(`touch newfile && git add newfile && git commit -a -mx && git push ssh://git@${app.fqdn}:${SSH_PORT}/${username}/${reponame} master`,
                  { env: env, cwd: repodir });
         rimraf.sync('/tmp/testrepo');
         done();
@@ -254,7 +255,7 @@ return done();
     }
 
     function sendMail(done) {
-        browser.get('https://' + app.fqdn + '/admin/config').then(function () {
+        browser.get(`https://${app.fqdn}/admin/config`).then(function () {
             var button = browser.findElement(by.xpath('//button[@id="test-mail-btn"]'));
             return browser.executeScript('arguments[0].scrollIntoView(true)', button);
         }).then(function () {
@@ -275,7 +276,7 @@ return done();
     it('can login', function (done) {
         var inspect = JSON.parse(execSync('cloudron inspect'));
 
-        superagent.post('https://' + inspect.apiEndpoint + '/api/v1/developer/login').send({
+        superagent.post(`https://${inspect.apiEndpoint}/api/v1/developer/login`).send({
             username: username,
             password: password
         }).end(function (error, result) {
@@ -284,7 +285,7 @@ return done();
 
             token = result.body.accessToken;
 
-            superagent.get('https://' + inspect.apiEndpoint + '/api/v1/profile')
+            superagent.get(`https://${inspect.apiEndpoint}/api/v1/profile`)
                 .query({ access_token: token }).end(function (error, result) {
                 if (error) return done(error);
                 if (result.statusCode !== 200) return done(new Error('Get profile failed with status ' + result.statusCode));
@@ -296,7 +297,7 @@ return done();
     });
 
     it('install app', function () {
-        execSync('cloudron install --new --wait --location ' + LOCATION, { cwd: path.resolve(__dirname, '..'), stdio: 'inherit' });
+        execSync(`cloudron install --new --wait --location ${LOCATION} -p SSH_PORT=${SSH_PORT}`, { cwd: path.resolve(__dirname, '..'), stdio: 'inherit' });
     });
 
     it('can get app information', getAppInfo);
@@ -380,7 +381,7 @@ return done();
 
     // check if the _first_ login via email succeeds
     it('can login via email', function (done) {
-        execSync('cloudron install --new --wait --location ' + LOCATION, { cwd: path.resolve(__dirname, '..'), stdio: 'inherit' });
+        execSync(`cloudron install --new --wait --location ${LOCATION} -p SSH_PORT=${SSH_PORT}`, { cwd: path.resolve(__dirname, '..'), stdio: 'inherit' });
         var inspect = JSON.parse(execSync('cloudron inspect'));
 
         app = inspect.apps.filter(function (a) { return a.location === LOCATION; })[0];
@@ -399,7 +400,7 @@ return done();
 
     // test update
     it('can install app', function () {
-        execSync('cloudron install --new --wait --appstore-id ' + app.manifest.id + ' --location ' + LOCATION, { cwd: path.resolve(__dirname, '..'), stdio: 'inherit' });
+        execSync(`cloudron install --new --wait --appstore-id ${app.manifest.id} --location ${LOCATION} -p SSH_PORT=${SSH_PORT}`, { cwd: path.resolve(__dirname, '..'), stdio: 'inherit' });
     });
 
     it('can get app information', getAppInfo);