diff --git a/egs/aishell/ASR/conformer_ctc/.train.py.swp b/egs/aishell/ASR/conformer_ctc/.train.py.swp
index 4a14380ed..8697e2e6d 100644
Binary files a/egs/aishell/ASR/conformer_ctc/.train.py.swp and b/egs/aishell/ASR/conformer_ctc/.train.py.swp differ
diff --git a/egs/aishell/ASR/conformer_ctc/train.py b/egs/aishell/ASR/conformer_ctc/train.py
index c2cbe6e3b..823f603da 100755
--- a/egs/aishell/ASR/conformer_ctc/train.py
+++ b/egs/aishell/ASR/conformer_ctc/train.py
@@ -28,6 +28,7 @@ import torch.multiprocessing as mp
 import torch.nn as nn
 from asr_datamodule import AishellAsrDataModule
 from conformer import Conformer
+from transformer import Transformer
 from lhotse.utils import fix_random_seed
 from torch.nn.parallel import DistributedDataParallel as DDP
 from torch.nn.utils import clip_grad_norm_