diff --git a/browser/components/customizableui/src/CustomizableWidgets.jsm b/browser/components/customizableui/src/CustomizableWidgets.jsm
index 21d5ed7d6736..7a3e1f20e6fd 100644
--- a/browser/components/customizableui/src/CustomizableWidgets.jsm
+++ b/browser/components/customizableui/src/CustomizableWidgets.jsm
@@ -770,7 +770,7 @@ const CustomizableWidgets = [{
         elem.section = aSection;
         elem.value = item.value;
         elem.setAttribute("class", "subviewbutton");
-        addShortcut(item, doc, elem);
+        addShortcut(item, aDocument, elem);
         containerElem.appendChild(elem);
       }
     },