diff --git a/cloudron.js b/cloudron.js
index 3d0cfa6..958865b 100644
--- a/cloudron.js
+++ b/cloudron.js
@@ -166,7 +166,7 @@ Cloudron.prototype.installApp = function (location, manifest, portBindings) {
 
     var res = request.post(this._origin + '/api/v1/apps/install')
             .query({ access_token: this._credentials.accessToken })
-            .send({ manifest: manifest, appStoreId: '', location: location, accessRestriction: null, oauthProxy: false, portBindings: null })
+            .send({ manifest: manifest, appStoreId: '', location: location, accessRestriction: null, oauthProxy: false, portBindings: portBindings })
             .end();
     common.verifyResponse2xx(res, 'Cannot install app');
     debug('App installed at %s'.green, location);