diff --git a/core/server/web/parent/app.js b/core/server/web/parent/app.js
index 5533cc2662..587ebe1fab 100644
--- a/core/server/web/parent/app.js
+++ b/core/server/web/parent/app.js
@@ -8,10 +8,10 @@ const vhost = require('@tryghost/vhost-middleware');
 /**
  * @param {Object} options
  * @param {Boolean} [options.start]
- * @param {Boolean} options.withBackend
- * @param {Boolean} options.withFrontend
+ * @param {Boolean} [options.withBackend]
+ * @param {Boolean} [options.withFrontend]
  */
-module.exports = function setupParentApp({start, withFrontend, withBackend}) {
+module.exports = function setupParentApp({start, withFrontend = true, withBackend = true}) {
     debug('ParentApp setup start');
     const parentApp = express('parent');
 
diff --git a/test/regression/mock-express-style/utils/setup.js b/test/regression/mock-express-style/utils/setup.js
index 5ffd75ec03..511140ece3 100644
--- a/test/regression/mock-express-style/utils/setup.js
+++ b/test/regression/mock-express-style/utils/setup.js
@@ -59,7 +59,9 @@ module.exports = {
         const helperService = require('../../../../core/frontend/services/helpers');
         await helperService.init();
 
-        const app = siteApp({start: true});
+        const app = siteApp({
+            start: true
+        });
         await appService.init();
         await urlServiceUtils.isFinished();