diff --git a/dev/demo/vcdemo.js b/dev/demo/vcdemo.js
index a302fda..87a2c74 100644
--- a/dev/demo/vcdemo.js
+++ b/dev/demo/vcdemo.js
@@ -131,6 +131,8 @@
 
     document.getElementById('vc-view').appendChild(vc.element());
 
+    vc.open();
+
     // show the current JSON serialization
     KorAP.showJSON = function () {
       var json = document.getElementById("json");