diff --git a/egs/librispeech/ASR/tiny_transducer_ctc/train.py b/egs/librispeech/ASR/tiny_transducer_ctc/train.py
index 085ce7ccf..34f7178e9 100644
--- a/egs/librispeech/ASR/tiny_transducer_ctc/train.py
+++ b/egs/librispeech/ASR/tiny_transducer_ctc/train.py
@@ -135,7 +135,7 @@ def add_model_arguments(parser: argparse.ArgumentParser):
 
     parser.add_argument(
         "--skip-add",
-        type=bool,
+        type=str2bool,
         default=False,
         help="""Use skip connection in the encoder.
         """,