diff --git a/tests/test_theming.py b/tests/test_theming.py
index 6dd5e12c7..be5105a65 100644
--- a/tests/test_theming.py
+++ b/tests/test_theming.py
@@ -25,7 +25,7 @@ def test_theme_api(app):
     # test Theme class API
     assert set(Theme.themes.keys()) == \
            set(['basic', 'default', 'scrolls', 'agogo', 'sphinxdoc',
-                'traditional', 'testtheme', 'ziptheme', 'epub'])
+                'traditional', 'testtheme', 'ziptheme', 'epub', 'nature'])
     assert Theme.themes['testtheme'][1] is None
     assert isinstance(Theme.themes['ziptheme'][1], zipfile.ZipFile)