diff --git a/src/authentic2/attribute_kinds.py b/src/authentic2/attribute_kinds.py
index b3ac4f7e4..27ae00b40 100644
--- a/src/authentic2/attribute_kinds.py
+++ b/src/authentic2/attribute_kinds.py
@@ -118,6 +118,7 @@ DEFAULT_ATTRIBUTE_KINDS = [
         'field_class': forms.BooleanField,
         'serialize': lambda x: str(int(bool(x))),
         'deserialize': lambda x: bool(int(x)),
+        'rest_framework_field_class': serializers.NullBooleanField,
     },
     {
         'label': _('date'),
diff --git a/tests/test_api.py b/tests/test_api.py
index b01639b82..240b0382f 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -141,6 +141,16 @@ def test_api_users_list(app, user):
     assert resp.json['next'] is None
 
 
+def test_api_users_boolean_attribute(app, superuser):
+    from authentic2.models import Attribute, AttributeValue
+    at = Attribute.objects.create(
+            kind='boolean', name='boolean', label='boolean', required=True)
+    superuser.attributes.boolean = True
+    app.authorization = ('Basic', (superuser.username, superuser.username))
+    resp = app.get('/api/users/%s/' % superuser.uuid)
+    assert resp.json['boolean'] is True
+
+
 def test_api_users_list_by_authorized_service(app, superuser):
     from authentic2.models import Service