diff --git a/demo/electron-tabs.html b/demo/electron-tabs.html
index d85f681..42aa2c7 100644
--- a/demo/electron-tabs.html
+++ b/demo/electron-tabs.html
@@ -14,7 +14,8 @@
 
   tabGroup.setDefaultTab({
     title: "Wikipedia",
-    src: "https://www.wikipedia.org/"
+    src: "https://www.wikipedia.org/",
+    active: true
   });
 
   tabGroup.addTab({
@@ -29,8 +30,6 @@
     active: true
   });
 
-  tabGroup.addTab();
-
 </script>
 </body>
 </html>