diff --git a/tests/test_updater.py b/tests/test_updater.py
index 7a6198c9..f7010b2b 100644
--- a/tests/test_updater.py
+++ b/tests/test_updater.py
@@ -1913,8 +1913,7 @@ def test_get_updater(self):
     multi_repo_updater = updater.MultiRepoUpdater(map_file)
 
     # Test for a non-existent repository name.
-    self.assertEqual(None, multi_repo_updater.get_updater('bad_repo_name',
-        multi_repo_updater.map_file['repositories']))
+    self.assertEqual(None, multi_repo_updater.get_updater('bad_repo_name')
 
     # Test get_updater indirectly via the "private" _update_from_repository().
     self.assertRaises(tuf.exceptions.Error,