diff --git a/cars/applications/dense_matching/census_mccnn_sgm.py b/cars/applications/dense_matching/census_mccnn_sgm.py
index 7c20b620..e0293840 100644
--- a/cars/applications/dense_matching/census_mccnn_sgm.py
+++ b/cars/applications/dense_matching/census_mccnn_sgm.py
@@ -233,7 +233,7 @@ def check_conf(self, conf):
         fake_dataset = xr.Dataset(
             data_vars={},
             coords={
-                "band_im": [(None)],
+                "band_im": [None],
                 "row": np.arange(10),
                 "col": np.arange(10),
             },
diff --git a/cars/applications/dense_matching/loaders/pandora_loader.py b/cars/applications/dense_matching/loaders/pandora_loader.py
index 09442bf6..c1b5d929 100644
--- a/cars/applications/dense_matching/loaders/pandora_loader.py
+++ b/cars/applications/dense_matching/loaders/pandora_loader.py
@@ -317,7 +317,7 @@ def get_config_input_custom_cars(user_cfg: Dict[str, dict]) -> Dict[str, dict]:
 
 
 def check_input_section_custom_cars(
-    user_cfg: Dict[str, dict]
+    user_cfg: Dict[str, dict],
 ) -> Dict[str, dict]:
     """
     Complete and check if the dictionary is correct