diff --git a/IPython/html/static/notebook/js/widgets/container.js b/IPython/html/static/notebook/js/widgets/container.js
index 9702a87..7617f1f 100644
--- a/IPython/html/static/notebook/js/widgets/container.js
+++ b/IPython/html/static/notebook/js/widgets/container.js
@@ -1,6 +1,6 @@
 require(["notebook/js/widget"], function(){
     var ContainerModel = IPython.WidgetModel.extend({});
-    IPython.notebook.widget_manager.register_widget_model('container_widget', ContainerModel);
+    IPython.notebook.widget_manager.register_widget_model('ContainerWidgetModel', ContainerModel);
 
     var ContainerView = IPython.WidgetView.extend({
         
diff --git a/IPython/html/widgets/widget_container.py b/IPython/html/widgets/widget_container.py
index 553a82d..4ca7bce 100644
--- a/IPython/html/widgets/widget_container.py
+++ b/IPython/html/widgets/widget_container.py
@@ -2,7 +2,7 @@ from widget import Widget
 from IPython.utils.traitlets import Unicode, Bool
 
 class ContainerWidget(Widget):
-    target_name = Unicode('container_widget')
+    target_name = Unicode('ContainerWidgetModel')
     default_view_name = Unicode('ContainerView')
     _keys = ['_vbox', '_hbox', '_start', '_end', '_center']
     _trait_changing = False