diff --git a/runtime/engine/asr/recognizer/recognizer_controller_impl.h b/runtime/engine/asr/recognizer/recognizer_controller_impl.h
index fe1f8e112..3ff6faa6b 100644
--- a/runtime/engine/asr/recognizer/recognizer_controller_impl.h
+++ b/runtime/engine/asr/recognizer/recognizer_controller_impl.h
@@ -32,8 +32,6 @@ namespace ppspeech {
 class RecognizerControllerImpl {
   public:
     explicit RecognizerControllerImpl(const RecognizerResource& resource);
-    //explicit RecognizerControllerImpl(const RecognizerResource& resource, 
-     //                                 std::shared_ptr<NnetBase> nnet);
     ~RecognizerControllerImpl();
     void Accept(std::vector<float> data);
     void InitDecoder();
@@ -88,4 +86,4 @@ class RecognizerControllerImpl {
     DISALLOW_COPY_AND_ASSIGN(RecognizerControllerImpl);
 };
 
-}
\ No newline at end of file
+}