diff --git a/common/content/tabs.js b/common/content/tabs.js
index bb68506f..dd8b4f4d 100644
--- a/common/content/tabs.js
+++ b/common/content/tabs.js
@@ -629,7 +629,7 @@ function Tabs() //{{{
             "Undo closing of all closed tabs",
             function (args)
             {
-                for (let i in Itarator(tabs.closedTabs))
+                for (let i in Iterator(tabs.closedTabs))
                     window.undoCloseTab(0);
 
             },