diff --git a/espnet2/asr/maskctc_model.py b/espnet2/asr/maskctc_model.py
index ab45c625606..26cf7a90956 100644
--- a/espnet2/asr/maskctc_model.py
+++ b/espnet2/asr/maskctc_model.py
@@ -122,6 +122,7 @@ def forward(
         speech_lengths: torch.Tensor,
         text: torch.Tensor,
         text_lengths: torch.Tensor,
+        **kwargs,
     ) -> Tuple[torch.Tensor, Dict[str, torch.Tensor], torch.Tensor]:
         """Frontend + Encoder + Decoder + Calc loss