diff --git a/runtime/engine/asr/recognizer/recognizer_controller_impl.cc b/runtime/engine/asr/recognizer/recognizer_controller_impl.cc
index cc4d3c78..1ed210b5 100644
--- a/runtime/engine/asr/recognizer/recognizer_controller_impl.cc
+++ b/runtime/engine/asr/recognizer/recognizer_controller_impl.cc
@@ -1,3 +1,5 @@
+// Copyright (c) 2020 Mobvoi Inc (Binbin Zhang, Di Wu)
+//               2022 Binbin Zhang (binbzha@qq.com)
 // Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
@@ -252,4 +254,4 @@ void RecognizerControllerImpl::UpdateResult(bool finish) {
     }
 }
 
-}  // namespace ppspeech
\ No newline at end of file
+}  // namespace ppspeech