diff --git a/src/llmtuner/hparams/generating_args.py b/src/llmtuner/hparams/generating_args.py
index e3e196e9..e792c003 100644
--- a/src/llmtuner/hparams/generating_args.py
+++ b/src/llmtuner/hparams/generating_args.py
@@ -46,6 +46,7 @@ class GeneratingArguments:
         default=1.0,
         metadata={"help": "Exponential penalty to the length that is used with beam-based generation."},
     )
+
     def to_dict(self) -> Dict[str, Any]:
         args = asdict(self)
         if args.get("max_new_tokens", -1) > 0: