diff --git a/trl/trainer/cpo_config.py b/trl/trainer/cpo_config.py
index 99c74e2c87..e5a9e4b7ba 100644
--- a/trl/trainer/cpo_config.py
+++ b/trl/trainer/cpo_config.py
@@ -83,4 +83,4 @@ class CPOConfig(TrainingArguments):
     def __post_init__(self):
         if self.loss_type == "kto_pair":
             raise ValueError("Support for kto_pair has been removed in CPOTrainer. Please use KTOTrainer.")
-        return super().__post_init__()
\ No newline at end of file
+        return super().__post_init__()