diff --git a/egs/librispeech/ASR/conformer_ctc2/.conformer.py.swp b/egs/librispeech/ASR/conformer_ctc2/.conformer.py.swp
new file mode 100644
index 000000000..334e164f0
Binary files /dev/null and b/egs/librispeech/ASR/conformer_ctc2/.conformer.py.swp differ
diff --git a/egs/librispeech/ASR/conformer_ctc2/conformer.py b/egs/librispeech/ASR/conformer_ctc2/conformer.py
index ed776be53..705d48c89 100644
--- a/egs/librispeech/ASR/conformer_ctc2/conformer.py
+++ b/egs/librispeech/ASR/conformer_ctc2/conformer.py
@@ -105,7 +105,7 @@ class Conformer(Transformer):
         
         self.group_num = group_num
         if self.group_num != 0:
-            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)