diff --git a/tests/v1/test_images.py b/tests/v1/test_images.py
index acc8c5cd..63df002e 100644
--- a/tests/v1/test_images.py
+++ b/tests/v1/test_images.py
@@ -759,7 +759,7 @@ class ImageManagerTest(testtools.TestCase):
             'return_req_id': [],
         }
         images = self.mgr.list(**fields)
-        images.next()
+        next(images)
         self.assertEqual(fields['return_req_id'], ['req-1234'])
 
     def test_image_list_with_notfound_owner(self):