diff --git a/egs/librispeech/ASR/conformer_ctc2/.decode.py.swp b/egs/librispeech/ASR/conformer_ctc2/.decode.py.swp
index 49be39ce1..efa0ffee4 100644
Binary files a/egs/librispeech/ASR/conformer_ctc2/.decode.py.swp and b/egs/librispeech/ASR/conformer_ctc2/.decode.py.swp differ
diff --git a/egs/librispeech/ASR/conformer_ctc2/decode.py b/egs/librispeech/ASR/conformer_ctc2/decode.py
index 2d257874b..478f60625 100755
--- a/egs/librispeech/ASR/conformer_ctc2/decode.py
+++ b/egs/librispeech/ASR/conformer_ctc2/decode.py
@@ -238,6 +238,7 @@ def greedy_search(
     """
     ctc_probs = probs
     _, max_index = ctc_probs.max(2)  # (B, maxlen)
+    print(mask.size())
     max_index = max_index.masked_fill_(mask, 0)  # (B, maxlen)
 
     ret_hyps = []