diff --git a/egs/aishell/ASR/conformer_ctc/.transformer.py.swp b/egs/aishell/ASR/conformer_ctc/.transformer.py.swp
index d7c044c8d..d0835fcce 100644
Binary files a/egs/aishell/ASR/conformer_ctc/.transformer.py.swp and b/egs/aishell/ASR/conformer_ctc/.transformer.py.swp differ
diff --git a/egs/aishell/ASR/conformer_ctc/transformer.py b/egs/aishell/ASR/conformer_ctc/transformer.py
index bd542cfee..078210a90 100644
--- a/egs/aishell/ASR/conformer_ctc/transformer.py
+++ b/egs/aishell/ASR/conformer_ctc/transformer.py
@@ -161,7 +161,7 @@ class Transformer(nn.Module):
             self.decoder_criterion = None
 
         self.group_num = group_num
-        self.group_layer_num = int(self.encoder_layers // self.group_num)
+        self.group_layer_num = int(num_encoder_layers // self.group_num)
         self.alpha = nn.Parameter(torch.rand(self.group_num))
         self.sigmoid = nn.Sigmoid()
         self.layer_norm = nn.LayerNorm(d_model)