diff --git a/rest_framework/tests/test_pk_related_creation.py b/rest_framework/tests/test_pk_related_creation.py
index bf2f3ade9..b3a392646 100644
--- a/rest_framework/tests/test_pk_related_creation.py
+++ b/rest_framework/tests/test_pk_related_creation.py
@@ -47,5 +47,9 @@ class TestPrimaryKeyRelatedRelation(TestCase):
         self.assertTrue(serializer.is_valid())
 
         obj = serializer.object
+        serializer.save_object(obj)
 
-        self.assertEqual(obj.members, [person])
+        self.assertEquals(obj.members.count(), 1)
+
+        member = obj.members.all()[0]
+        self.assertEqual(member, person)