diff --git a/examples/audio/silero-vad/cpp/CMakeLists.txt b/examples/audio/silero-vad/cpp/CMakeLists.txt
index 004d193168..9e2f58360e 100644
--- a/examples/audio/silero-vad/cpp/CMakeLists.txt
+++ b/examples/audio/silero-vad/cpp/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.23)
+cmake_minimum_required(VERSION 3.10)
 project(silero_vad)
 
 set(CMAKE_CXX_STANDARD 11)
diff --git a/examples/audio/silero-vad/cpp/vad.cc b/examples/audio/silero-vad/cpp/vad.cc
index 512d94adb6..a70dd41f8a 100644
--- a/examples/audio/silero-vad/cpp/vad.cc
+++ b/examples/audio/silero-vad/cpp/vad.cc
@@ -93,7 +93,7 @@ void Vad::setAudioCofig(int sr, int frame_ms, float threshold,
     Vad::speech_pad_ms_ = speech_pad_ms;
 }
 
-bool Vad::Preprocess(std::vector<float> audioWindowData) {
+bool Vad::Preprocess(std::vector<float>& audioWindowData) {
     inputTensors_.resize(4);
     inputTensors_[0].name = "input";
     inputTensors_[0].SetExternalData(input_node_dims_, fastdeploy::FDDataType::FP32,
diff --git a/examples/audio/silero-vad/cpp/vad.h b/examples/audio/silero-vad/cpp/vad.h
index 750085bc58..b1eb95a313 100644
--- a/examples/audio/silero-vad/cpp/vad.h
+++ b/examples/audio/silero-vad/cpp/vad.h
@@ -50,7 +50,7 @@ class Vad : public fastdeploy::FastDeployModel {
  private:
   bool Initialize();
 
-  bool Preprocess(std::vector<float> audioWindowData);
+  bool Preprocess(std::vector<float>& audioWindowData);
 
   bool Postprocess();