diff --git a/graphene/contrib/django/tests/filter/test_fields.py b/graphene/contrib/django/tests/filter/test_fields.py
index 33cc2421..4c93ca1e 100644
--- a/graphene/contrib/django/tests/filter/test_fields.py
+++ b/graphene/contrib/django/tests/filter/test_fields.py
@@ -35,12 +35,13 @@ class PetNode(DjangoNode):
     class Meta:
         model = Pet
 
+schema = Schema()
 
 def assert_arguments(field, *arguments):
     ignore = ('after', 'before', 'first', 'last', 'orderBy')
     actual = [
         name
-        for name in field.arguments.arguments.keys()
+        for name in schema.T(field.arguments)
         if name not in ignore and not name.startswith('_')
     ]
     assert set(arguments) == set(actual), \
@@ -51,12 +52,12 @@ def assert_arguments(field, *arguments):
 
 
 def assert_orderable(field):
-    assert 'orderBy' in field.arguments.arguments.keys(), \
+    assert 'orderBy' in schema.T(field.arguments), \
         'Field cannot be ordered'
 
 
 def assert_not_orderable(field):
-    assert 'orderBy' not in field.arguments.arguments.keys(), \
+    assert 'orderBy' not in schema.T(field.arguments), \
         'Field can be ordered'
 
 
diff --git a/graphene/contrib/django/tests/test_query.py b/graphene/contrib/django/tests/test_query.py
index 090c8695..4b37d517 100644
--- a/graphene/contrib/django/tests/test_query.py
+++ b/graphene/contrib/django/tests/test_query.py
@@ -1,3 +1,4 @@
+import pytest
 from py.test import raises
 
 import graphene
@@ -7,6 +8,9 @@ from graphene.contrib.django import DjangoNode, DjangoObjectType
 from .models import Article, Reporter
 
 
+pytestmark = pytest.mark.django_db
+
+
 def test_should_query_only_fields():
     with raises(Exception):
         class ReporterType(DjangoObjectType):
diff --git a/graphene/contrib/django/utils.py b/graphene/contrib/django/utils.py
index 38bf7546..4be3c55f 100644
--- a/graphene/contrib/django/utils.py
+++ b/graphene/contrib/django/utils.py
@@ -66,7 +66,7 @@ def get_filtering_args_from_filterset(filterset_class, type):
 
     # Also add the 'order_by' field
     if filterset_class._meta.order_by:
-        args[filterset_class.order_by_field] = Argument(String)
+        args[filterset_class.order_by_field] = Argument(String())
     return args