diff --git a/src/kiri/conf.js b/src/kiri/conf.js
index 379e4a4b..d2a253ec 100644
--- a/src/kiri/conf.js
+++ b/src/kiri/conf.js
@@ -593,7 +593,7 @@
             controller:{
                 view: null,
                 dark: false,
-                expert: false,
+                expert: true,
                 zoomSpeed: 1.0,
                 thinRender: false,
                 reverseZoom: true,