diff --git a/2021/12/dojo_demo1/app/widgets/MainWidget.js b/2021/12/dojo_demo1/app/widgets/MainWidget.js
index 5ed2d98..371848f 100644
--- a/2021/12/dojo_demo1/app/widgets/MainWidget.js
+++ b/2021/12/dojo_demo1/app/widgets/MainWidget.js
@@ -2,8 +2,9 @@ define([
 	"dijit/_TemplatedMixin",
 	"dijit/_WidgetBase",
 	"dojo/_base/declare",
+	"./ChildWidget",
 	"dojo/text!./MainWidget.html"
-], function(_TemplatedMixin, _WidgetBase, declare, template) {
+], function(_TemplatedMixin, _WidgetBase, declare, ChildWidget, template) {
 	return declare("app/widgets/MainWidget", [_WidgetBase, _TemplatedMixin], {
 		templateString: template
 	});