diff --git a/funasr/tasks/vad.py b/funasr/tasks/vad.py
index 1c1d4e0ed..d07acf18a 100644
--- a/funasr/tasks/vad.py
+++ b/funasr/tasks/vad.py
@@ -344,8 +344,8 @@ class VADTask(AbsTask):
 
         with config_file.open("r", encoding="utf-8") as f:
             args = yaml.safe_load(f)
-        if cmvn_file is not None:
-            args["cmvn_file"] = cmvn_file
+        #if cmvn_file is not None:
+        args["cmvn_file"] = cmvn_file
         args = argparse.Namespace(**args)
         model = cls.build_model(args)
         model.to(device)