diff --git a/passbook/factors/dummy/api.py b/passbook/factors/dummy/api.py
index f34de9e93..96f9c0beb 100644
--- a/passbook/factors/dummy/api.py
+++ b/passbook/factors/dummy/api.py
@@ -11,7 +11,7 @@ class DummyFactorSerializer(ModelSerializer):
     class Meta:
 
         model = DummyFactor
-        fields = ['pk', 'name', 'slug', 'order', 'enabled', '__type__']
+        fields = ['pk', 'name', 'slug', 'order', 'enabled']
 
 
 class DummyFactorViewSet(ModelViewSet):
diff --git a/passbook/sources/ldap/api.py b/passbook/sources/ldap/api.py
index 09470b48b..1c8983a9a 100644
--- a/passbook/sources/ldap/api.py
+++ b/passbook/sources/ldap/api.py
@@ -37,7 +37,7 @@ class LDAPPropertyMappingSerializer(ModelSerializer):
 
     class Meta:
         model = LDAPPropertyMapping
-        fields = SOURCE_SERIALIZER_FIELDS + ['name', 'ldap_property', 'object_field']
+        fields = ['pk', 'name', 'ldap_property', 'object_field']
 
 
 class LDAPSourceViewSet(ModelViewSet):