diff --git a/android/SherpaOnnxVad/app/src/main/java/com/k2fsa/sherpa/onnx/Vad.kt b/android/SherpaOnnxVad/app/src/main/java/com/k2fsa/sherpa/onnx/Vad.kt
index fc21593abf..0c19e53106 100644
--- a/android/SherpaOnnxVad/app/src/main/java/com/k2fsa/sherpa/onnx/Vad.kt
+++ b/android/SherpaOnnxVad/app/src/main/java/com/k2fsa/sherpa/onnx/Vad.kt
@@ -64,6 +64,7 @@ class Vad(
     private external fun acceptWaveform(ptr: Long, samples: FloatArray)
     private external fun empty(ptr: Long): Boolean
     private external fun pop(ptr: Long)
+    private external fun clear(ptr: Long)
     private external fun front(ptr: Long): Array<Any>
     private external fun isSpeechDetected(ptr: Long): Boolean
     private external fun reset(ptr: Long)