diff --git a/egs/librispeech/ASR/pruned_transducer_stateless7_streaming/streaming_decode.py b/egs/librispeech/ASR/pruned_transducer_stateless7_streaming/streaming_decode.py
index b76272e66..a0f54b6e1 100755
--- a/egs/librispeech/ASR/pruned_transducer_stateless7_streaming/streaming_decode.py
+++ b/egs/librispeech/ASR/pruned_transducer_stateless7_streaming/streaming_decode.py
@@ -22,7 +22,7 @@ Usage:
   --avg 15 \
   --decode-chunk-len 32 \
   --exp-dir ./pruned_transducer_stateless7_streaming/exp \
-  --decoding_method greedy_search \
+  --decoding-method greedy_search \
   --num-decode-streams 2000
 """