diff --git a/mozilla/extensions/venkman/resources/content/venkman-views.js b/mozilla/extensions/venkman/resources/content/venkman-views.js
index 6fe9d86287e..a4b107a9eed 100644
--- a/mozilla/extensions/venkman/resources/content/venkman-views.js
+++ b/mozilla/extensions/venkman/resources/content/venkman-views.js
@@ -2970,7 +2970,7 @@ function s2v_cleardeck ()
         while (i > 0)
             this.deck.removeChild (this.deck.childNodes[--i]);
 
-        var bloke = document.createElement ("tab");
+        var bloke = this.tabs.ownerDocument.createElement("tab");
         bloke.setAttribute ("id", "source2-bloke");
         bloke.setAttribute ("hidden", "true");
         this.tabs.appendChild (bloke);