diff --git a/tests/test_util/test_util_i18n.py b/tests/test_util/test_util_i18n.py
index 08c3ce0a3c0..5f0f3816540 100644
--- a/tests/test_util/test_util_i18n.py
+++ b/tests/test_util/test_util_i18n.py
@@ -179,13 +179,13 @@ def test_CatalogRepository(tmp_path):
     assert sorted(c.domain for c in repo.catalogs) == []
 
     # no languages
-    repo = i18n.CatalogRepository(tmp_path, ['loc1', 'loc2'], None, 'utf-8')
+    repo = i18n.CatalogRepository(tmp_path, ['loc1', 'loc2'], '', 'utf-8')
     assert sorted(c.domain for c in repo.catalogs) == []
 
     # unknown locale_dirs
-    repo = i18n.CatalogRepository(tmp_path, ['loc3'], None, 'utf-8')
+    repo = i18n.CatalogRepository(tmp_path, ['loc3'], '', 'utf-8')
     assert sorted(c.domain for c in repo.catalogs) == []
 
     # no locale_dirs
-    repo = i18n.CatalogRepository(tmp_path, [], None, 'utf-8')
+    repo = i18n.CatalogRepository(tmp_path, [], '', 'utf-8')
     assert sorted(c.domain for c in repo.catalogs) == []