diff --git a/tests/fixtures/tests.py b/tests/fixtures/tests.py
index 86164e03bc..31b6f16c8a 100644
--- a/tests/fixtures/tests.py
+++ b/tests/fixtures/tests.py
@@ -478,6 +478,7 @@ class FixtureLoadingTests(DumpDataAssertMixin, TestCase):
             options['verbosity'] = 0
             new_io = six.StringIO()
             new_io.isatty = lambda: True
+            options.update({'stdout': new_io, 'stderr': new_io})
             management.call_command('dumpdata', 'fixtures', **options)
             self.assertEqual(new_io.getvalue(), '')