diff --git a/GPT_SoVITS/f5_tts/model/modules.py b/GPT_SoVITS/f5_tts/model/modules.py
index 22f1f99..5f6f5cf 100644
--- a/GPT_SoVITS/f5_tts/model/modules.py
+++ b/GPT_SoVITS/f5_tts/model/modules.py
@@ -391,7 +391,7 @@ class Attention(nn.Module):
 
 # Attention processor
 
-from torch.nn.attention import SDPBackend
+# from torch.nn.attention import SDPBackend
 # torch.backends.cuda.enable_flash_sdp(True)
 class AttnProcessor:
     def __init__(self):