diff --git a/egs/aishell/ASR/transformer_ctc/.train.py.swp b/egs/aishell/ASR/transformer_ctc/.train.py.swp
index 23f3aeed5..79767eb43 100644
Binary files a/egs/aishell/ASR/transformer_ctc/.train.py.swp and b/egs/aishell/ASR/transformer_ctc/.train.py.swp differ
diff --git a/egs/aishell/ASR/transformer_ctc/train.py b/egs/aishell/ASR/transformer_ctc/train.py
index 931af3000..a917e87f9 100755
--- a/egs/aishell/ASR/transformer_ctc/train.py
+++ b/egs/aishell/ASR/transformer_ctc/train.py
@@ -523,7 +523,7 @@ def train_one_epoch(
 
         optimizer.zero_grad()
         loss.backward()
-        clip_grad_norm_(model.parameters(), 5.0, 2.0)
+        #clip_grad_norm_(model.parameters(), 5.0, 2.0)
         optimizer.step()
 
         if batch_idx % params.log_interval == 0: