diff --git a/rvc/train/preprocess/preprocess.py b/rvc/train/preprocess/preprocess.py
index 513ae541e..48534a897 100644
--- a/rvc/train/preprocess/preprocess.py
+++ b/rvc/train/preprocess/preprocess.py
@@ -21,6 +21,7 @@
 
 import multiprocessing
 
+
 class PreProcess:
     def __init__(self, sr, exp_dir, per=3.0):
         self.slicer = Slicer(