diff --git a/tests/test_validation.py b/tests/test_validation.py
index 71bed89aa..af38eb6af 100644
--- a/tests/test_validation.py
+++ b/tests/test_validation.py
@@ -95,14 +95,7 @@ class ValidationTest(unittest.TestCase):
             validate_config(cfg)
 
     def test_hf_use_auth_token(self):
-        base_cfg = DictDefault(
-            {
-                "push_dataset_to_hub": None,
-                "hf_use_auth_token": None,
-            }
-        )
-
-        cfg = base_cfg | DictDefault(
+        cfg = DictDefault(
             {
                 "push_dataset_to_hub": "namespace/repo",
             }
@@ -111,7 +104,7 @@ class ValidationTest(unittest.TestCase):
         with pytest.raises(ValueError, match=r".*hf_use_auth_token.*"):
             validate_config(cfg)
 
-        cfg = base_cfg | DictDefault(
+        cfg = DictDefault(
             {
                 "push_dataset_to_hub": "namespace/repo",
                 "hf_use_auth_token": True,