diff --git a/platform/viewer/public/config/default.js b/platform/viewer/public/config/default.js
index d911a36a5..fb9cea8d3 100644
--- a/platform/viewer/public/config/default.js
+++ b/platform/viewer/public/config/default.js
@@ -2,6 +2,7 @@ window.config = {
   routerBasename: '/',
   // whiteLabelling: {},
   extensions: [],
+  modes: [],
   showStudyList: true,
   // filterQueryParam: false,
   dataSources: [