diff --git a/llmfoundry/command_utils/data_prep/convert_delta_to_json.py b/llmfoundry/command_utils/data_prep/convert_delta_to_json.py
index dac57dcd3d..d68718e2ee 100644
--- a/llmfoundry/command_utils/data_prep/convert_delta_to_json.py
+++ b/llmfoundry/command_utils/data_prep/convert_delta_to_json.py
@@ -677,7 +677,7 @@ def fetch_DT(
         ) == grpc.StatusCode.INTERNAL and 'Job aborted due to stage failure' in e.details(
         ):
             raise InternalError(
-                message=f'Possible Hardware Failure: {e.details()}'
+                message=f'Possible Hardware Failure: {e.details()}',
             ) from e
         raise e
 
diff --git a/tests/a_scripts/data_prep/test_convert_delta_to_json.py b/tests/a_scripts/data_prep/test_convert_delta_to_json.py
index ce6274974d..8038e6624d 100644
--- a/tests/a_scripts/data_prep/test_convert_delta_to_json.py
+++ b/tests/a_scripts/data_prep/test_convert_delta_to_json.py
@@ -530,10 +530,12 @@ def test_format_tablename(self):
 
     @patch('llmfoundry.command_utils.data_prep.convert_delta_to_json.fetch')
     @patch(
-        'llmfoundry.command_utils.data_prep.convert_delta_to_json.validate_and_get_cluster_info'
+        'llmfoundry.command_utils.data_prep.convert_delta_to_json.validate_and_get_cluster_info',
     )
     def test_fetch_DT_grpc_error_handling(
-        self, mock_validate_cluster_info: MagicMock, mock_fetch: MagicMock
+        self,
+        mock_validate_cluster_info: MagicMock,
+        mock_fetch: MagicMock,
     ):
         # Arrange
         # Mock the validate_and_get_cluster_info to return test values
@@ -571,7 +573,8 @@ def test_fetch_DT_grpc_error_handling(
         # Verify that the InternalError contains the expected message
         self.assertIn('Possible Hardware Failure', str(context.exception))
         self.assertIn(
-            'Job aborted due to stage failure', str(context.exception)
+            'Job aborted due to stage failure',
+            str(context.exception),
         )
 
         # Verify that fetch was called