diff --git a/vertical-tabbrowser.xml b/vertical-tabbrowser.xml
index 8110047..b56edbb 100644
--- a/vertical-tabbrowser.xml
+++ b/vertical-tabbrowser.xml
@@ -273,6 +273,9 @@
           switch (aEvent.type) {
             case "load":
               this.updateVisibility();
+               if (typeof TabsInTitlebar._updateOnInit != "undefined") {
+                 TabsInTitlebar.init();
+               }
               break;
             case "resize":
               if (aEvent.target != window)