diff --git a/IPython/html/static/widgets/js/init.js b/IPython/html/static/widgets/js/init.js
index 1d92668..cfbd134 100644
--- a/IPython/html/static/widgets/js/init.js
+++ b/IPython/html/static/widgets/js/init.js
@@ -5,7 +5,7 @@ define([
     "widgets/js/manager",
     "widgets/js/widget_bool",
     "widgets/js/widget_button",
-    "widgets/js/widget_container",
+    "widgets/js/widget_box",
     "widgets/js/widget_float",
     "widgets/js/widget_image",
     "widgets/js/widget_int",
diff --git a/IPython/html/static/widgets/js/widget_container.js b/IPython/html/static/widgets/js/widget_box.js
similarity index 100%
rename from IPython/html/static/widgets/js/widget_container.js
rename to IPython/html/static/widgets/js/widget_box.js
diff --git a/IPython/html/widgets/__init__.py b/IPython/html/widgets/__init__.py
index 54b1398..618515e 100644
--- a/IPython/html/widgets/__init__.py
+++ b/IPython/html/widgets/__init__.py
@@ -2,7 +2,7 @@ from .widget import Widget, DOMWidget, CallbackDispatcher
 
 from .widget_bool import Checkbox, ToggleButton
 from .widget_button import Button
-from .widget_container import Box, Popup, FlexBox, HBox, VBox
+from .widget_box import Box, Popup, FlexBox, HBox, VBox
 from .widget_float import FloatText, BoundedFloatText, FloatSlider, FloatProgress
 from .widget_image import Image
 from .widget_int import IntText, BoundedIntText, IntSlider, IntProgress
@@ -14,7 +14,7 @@ from .interaction import interact, interactive, fixed
 # Deprecated classes
 from .widget_bool import CheckBox, ToggleButtonWidget
 from .widget_button import ButtonWidget
-from .widget_container import ContainerWidget, PopupWidget
+from .widget_box import ContainerWidget, PopupWidget
 from .widget_float import FloatTextWidget, BoundedFloatTextWidget, FloatSliderWidget, FloatProgressWidget
 from .widget_image import ImageWidget
 from .widget_int import IntTextWidget, BoundedIntTextWidget, IntSliderWidget, IntProgressWidget
diff --git a/IPython/html/widgets/widget_container.py b/IPython/html/widgets/widget_box.py
similarity index 100%
rename from IPython/html/widgets/widget_container.py
rename to IPython/html/widgets/widget_box.py
diff --git a/IPython/html/widgets/widget_selectioncontainer.py b/IPython/html/widgets/widget_selectioncontainer.py
index 7d00b35..729090b 100644
--- a/IPython/html/widgets/widget_selectioncontainer.py
+++ b/IPython/html/widgets/widget_selectioncontainer.py
@@ -14,7 +14,7 @@ pages.
 #-----------------------------------------------------------------------------
 # Imports
 #-----------------------------------------------------------------------------
-from .widget_container import Box
+from .widget_box import Box
 from IPython.utils.traitlets import Unicode, Dict, CInt
 from IPython.utils.warn import DeprecatedClass