diff --git a/bricks/popup.js b/bricks/popup.js
index d5404e7..42fc847 100644
--- a/bricks/popup.js
+++ b/bricks/popup.js
@@ -46,7 +46,7 @@ bricks.Popup = class extends bricks.VBox {
 	open(){
 		var rect;
 
-		if (this.widget instanceof bricks.Widget){
+		if (this.widget instanceof bricks.JsWidget){
 			rect = this.widget.showRectage()
 			this.issub = true;
 		} else if (this.widget instanceof String){