diff --git a/bricks/message.js b/bricks/message.js
index 34331fb..1eb2f5e 100644
--- a/bricks/message.js
+++ b/bricks/message.js
@@ -43,7 +43,7 @@ bricks.show_message = function(opts){
 	w.open();
 }
 
-bricks.PopupForm = class extends bricks.BPopup {
+bricks.PopupForm = class extends bricks.VBox {
 	/* 
 	{
 		form:{
@@ -63,4 +63,3 @@ bricks.PopupForm = class extends bricks.BPopup {
 }
 bricks.Factory.register('Message', bricks.Message);
 bricks.Factory.register('Error', bricks.Error);
-bricks.Factory.register('PopupForm', bricks.PopupForm);