diff --git a/swh/web/tests/data.py b/swh/web/tests/data.py
index 873205b3..d0759c17 100644
--- a/swh/web/tests/data.py
+++ b/swh/web/tests/data.py
@@ -178,10 +178,9 @@ def _init_tests_data():
                 os.path.dirname(__file__), "resources/repos/%s" % archive
             )
             loader = GitLoaderFromArchive(
-                origin["url"],
-                archive_path=origin_repo_archive,
-                config=_TEST_LOADER_CONFIG,
+                origin["url"], archive_path=origin_repo_archive,
             )
+            loader.config = _TEST_LOADER_CONFIG
             if storage is None:
                 storage = loader.storage
             else: