diff --git a/common/content/tabs.js b/common/content/tabs.js
index 2a03f948..c6210807 100644
--- a/common/content/tabs.js
+++ b/common/content/tabs.js
@@ -174,7 +174,7 @@ var Tabs = Module("tabs", {
      * @param {boolean} activate Whether to select the newly cloned tab.
      */
     cloneTab: function cloneTab(tab, activate) {
-        let newTab = config.tabbrowser.addTab("about:blank", { ownerTab: tab.dactylOwner && tab.dactylOwner.get() || tab });
+        let newTab = config.tabbrowser.addTab("about:blank", { ownerTab: tab });
         Tabs.copyTab(newTab, tab);
 
         if (activate)