diff --git a/source/use_case/kws_asr/src/UseCaseHandler.cc b/source/use_case/kws_asr/src/UseCaseHandler.cc
index 01aefae..9427ae0 100644
--- a/source/use_case/kws_asr/src/UseCaseHandler.cc
+++ b/source/use_case/kws_asr/src/UseCaseHandler.cc
@@ -25,6 +25,7 @@
 #include "MicroNetKwsMfcc.hpp"
 #include "Classifier.hpp"
 #include "KwsResult.hpp"
+#include "Wav2LetterModel.hpp"
 #include "Wav2LetterMfcc.hpp"
 #include "Wav2LetterPreprocess.hpp"
 #include "Wav2LetterPostprocess.hpp"
@@ -470,4 +471,4 @@
     }
 
 } /* namespace app */
-} /* namespace arm */
\ No newline at end of file
+} /* namespace arm */