diff --git a/egs/librispeech/ASR/conformer_ctc/decode.py b/egs/librispeech/ASR/conformer_ctc/decode.py
index 4f22a6f6c..604ac005e 100755
--- a/egs/librispeech/ASR/conformer_ctc/decode.py
+++ b/egs/librispeech/ASR/conformer_ctc/decode.py
@@ -59,7 +59,7 @@ def get_parser():
     )
 
     parser.add_argument(
-        "--scale",
+        "--lattice-score-scale",
         type=float,
         default=1.0,
         help="The scale to be applied to `lattice.scores`."
@@ -206,7 +206,7 @@ def decode_one_batch(
             num_paths=params.num_paths,
             ref_texts=supervisions["text"],
             lexicon=lexicon,
-            scale=params.scale,
+            scale=params.lattice_score_scale,
         )
 
     if params.method in ["1best", "nbest"]:
@@ -220,9 +220,9 @@ def decode_one_batch(
                 lattice=lattice,
                 num_paths=params.num_paths,
                 use_double_scores=params.use_double_scores,
-                scale=params.scale,
+                scale=params.lattice_score_scale,
             )
-            key = f"no_rescore-scale-{params.scale}-{params.num_paths}"
+            key = f"no_rescore-scale-{params.lattice_score_scale}-{params.num_paths}"
 
         hyps = get_texts(best_path)
         hyps = [[lexicon.word_table[i] for i in ids] for ids in hyps]
@@ -243,7 +243,7 @@ def decode_one_batch(
             G=G,
             num_paths=params.num_paths,
             lm_scale_list=lm_scale_list,
-            scale=params.scale,
+            scale=params.lattice_score_scale,
         )
     elif params.method == "whole-lattice-rescoring":
         best_path_dict = rescore_with_whole_lattice(
@@ -263,7 +263,7 @@ def decode_one_batch(
             memory_key_padding_mask=memory_key_padding_mask,
             sos_id=sos_id,
             eos_id=eos_id,
-            scale=params.scale,
+            scale=params.lattice_score_scale,
         )
     else:
         assert False, f"Unsupported decoding method: {params.method}"