diff --git a/IPython/html/widgets/widget_bool.py b/IPython/html/widgets/widget_bool.py
index 9f71baf..a9a0f2e 100644
--- a/IPython/html/widgets/widget_bool.py
+++ b/IPython/html/widgets/widget_bool.py
@@ -1,4 +1,4 @@
-from base import Widget
+from widget import Widget
from IPython.utils.traitlets import Unicode, Bool, List
class BoolWidget(Widget):
diff --git a/IPython/html/widgets/widget_button.py b/IPython/html/widgets/widget_button.py
index ac78f70..749cb5a 100644
--- a/IPython/html/widgets/widget_button.py
+++ b/IPython/html/widgets/widget_button.py
@@ -1,7 +1,7 @@
import inspect
import types
-from base import Widget
+from widget import Widget
from IPython.utils.traitlets import Unicode, Bool, Int
class ButtonWidget(Widget):
diff --git a/IPython/html/widgets/widget_container.py b/IPython/html/widgets/widget_container.py
index bb37dc9..553a82d 100644
--- a/IPython/html/widgets/widget_container.py
+++ b/IPython/html/widgets/widget_container.py
@@ -1,4 +1,4 @@
-from base import Widget
+from widget import Widget
from IPython.utils.traitlets import Unicode, Bool
class ContainerWidget(Widget):
diff --git a/IPython/html/widgets/widget_float.py b/IPython/html/widgets/widget_float.py
index 42daf30..01b0a39 100644
--- a/IPython/html/widgets/widget_float.py
+++ b/IPython/html/widgets/widget_float.py
@@ -1,4 +1,4 @@
-from base import Widget
+from widget import Widget
from IPython.utils.traitlets import Unicode, Float, Bool, List
class FloatWidget(Widget):
diff --git a/IPython/html/widgets/widget_float_range.py b/IPython/html/widgets/widget_float_range.py
index ba12de8..df904ca 100644
--- a/IPython/html/widgets/widget_float_range.py
+++ b/IPython/html/widgets/widget_float_range.py
@@ -1,4 +1,4 @@
-from base import Widget
+from widget import Widget
from IPython.utils.traitlets import Unicode, Float, Bool, List
class FloatRangeWidget(Widget):
diff --git a/IPython/html/widgets/widget_int.py b/IPython/html/widgets/widget_int.py
index 742aea3..10aab8a 100644
--- a/IPython/html/widgets/widget_int.py
+++ b/IPython/html/widgets/widget_int.py
@@ -1,4 +1,4 @@
-from base import Widget
+from widget import Widget
from IPython.utils.traitlets import Unicode, Int, Bool, List
class IntWidget(Widget):
diff --git a/IPython/html/widgets/widget_int_range.py b/IPython/html/widgets/widget_int_range.py
index f89a537..912567b 100644
--- a/IPython/html/widgets/widget_int_range.py
+++ b/IPython/html/widgets/widget_int_range.py
@@ -1,4 +1,4 @@
-from base import Widget
+from widget import Widget
from IPython.utils.traitlets import Unicode, Int, Bool, List
class IntRangeWidget(Widget):
diff --git a/IPython/html/widgets/widget_selection.py b/IPython/html/widgets/widget_selection.py
index c85a6d1..72e2553 100644
--- a/IPython/html/widgets/widget_selection.py
+++ b/IPython/html/widgets/widget_selection.py
@@ -1,4 +1,4 @@
-from base import Widget
+from widget import Widget
from IPython.utils.traitlets import Unicode, List, Bool
class SelectionWidget(Widget):
diff --git a/IPython/html/widgets/widget_string.py b/IPython/html/widgets/widget_string.py
index 0644de0..96aa7a2 100644
--- a/IPython/html/widgets/widget_string.py
+++ b/IPython/html/widgets/widget_string.py
@@ -1,4 +1,4 @@
-from base import Widget
+from widget import Widget
from IPython.utils.traitlets import Unicode, Bool, List
class StringWidget(Widget):