diff --git a/egs/aishell/ASR/conformer_ctc/pretrained.py b/egs/aishell/ASR/conformer_ctc/pretrained.py
index 4459c10c6..e62300f94 100755
--- a/egs/aishell/ASR/conformer_ctc/pretrained.py
+++ b/egs/aishell/ASR/conformer_ctc/pretrained.py
@@ -327,7 +327,7 @@ def main():
 
         lattice = get_lattice(
             nnet_output=nnet_output,
-            HLG=HLG,
+            decoding_graph=HLG,
             supervision_segments=supervision_segments,
             search_beam=params.search_beam,
             output_beam=params.output_beam,