diff --git a/oslo_reports/tests/test_views.py b/oslo_reports/tests/test_views.py
index 813b731..7161ef9 100644
--- a/oslo_reports/tests/test_views.py
+++ b/oslo_reports/tests/test_views.py
@@ -396,7 +396,7 @@ class TestJinjaView(base.BaseTestCase):
         super(TestJinjaView, self).setUp()
         self.model = base_model.ReportModel(data={'int': 1, 'string': 'value'})
 
-    @mock.patch('six.moves.builtins.open', new=MM_OPEN)
+    @mock.mock_open(MM_OPEN)
     def test_load_from_file(self):
         self.model.attached_view = jv.JinjaView(path='a/b/c/d.jinja.txt')