diff --git a/dojango/forms/widgets.py b/dojango/forms/widgets.py
index f07de92..2b5f022 100644
--- a/dojango/forms/widgets.py
+++ b/dojango/forms/widgets.py
@@ -19,7 +19,7 @@
     'DojoWidgetMixin', 'Input', 'Widget', 'TextInput', 'PasswordInput',
     'HiddenInput', 'MultipleHiddenInput', 'FileInput', 'Textarea',
     'DateInput', 'DateTimeInput', 'TimeInput', 'CheckboxInput', 'Select',
-    'NullBooleanSelect', 'SelectMultiple', 'RadioInput', 'RadioFieldRenderer',
+    'NullBooleanSelect', 'SelectMultiple', 'RadioInput', 'RadioSelect', 'RadioFieldRenderer',
     'RadioSelect', 'CheckboxSelectMultiple', 'MultiWidget', 'SplitDateTimeWidget',
     'SplitHiddenDateTimeWidget', 'SimpleTextarea', 'EditorInput', 'HorizontalSliderInput',
     'VerticalSliderInput', 'ValidationTextInput', 'ValidationPasswordInput',
@@ -283,7 +283,8 @@ class NullBooleanSelect(DojoWidgetMixin, widgets.NullBooleanSelect):
 class SelectMultiple(DojoWidgetMixin, widgets.SelectMultiple):
     dojo_type = 'dijit.form.MultiSelect'
 
-RadioInput = widgets.RadioInput
+RadioSelect = widgets.RadioSelect
+RadioInput = widgets.RadioSelect
 RadioFieldRenderer = widgets.RadioFieldRenderer
 
 class RadioSelect(DojoWidgetMixin, widgets.RadioSelect):
diff --git a/dojango/util/__init__.py b/dojango/util/__init__.py
index 42db701..ccdbe55 100644
--- a/dojango/util/__init__.py
+++ b/dojango/util/__init__.py
@@ -219,7 +219,7 @@ def to_json_response(data, func_name=None, use_iframe=False):
     if use_iframe:
         mimetype = "text/html"
         data = render_to_string("dojango/json_iframe.html", {'json_data': data})
-    ret = HttpResponse(data, mimetype=mimetype+"; charset=%s" % settings.DEFAULT_CHARSET)
+    ret = HttpResponse(data, content_type=mimetype+"; charset=%s" % settings.DEFAULT_CHARSET)
     # The following are for IE especially
     ret['Pragma'] = "no-cache"
     ret['Cache-Control'] = "must-revalidate"