diff --git a/utils/include/dinput_utils_tool.h b/utils/include/dinput_utils_tool.h
index 15ab0ad..8d0df4f 100644
--- a/utils/include/dinput_utils_tool.h
+++ b/utils/include/dinput_utils_tool.h
@@ -58,6 +58,7 @@ int OpenInputDeviceFdByPath(const std::string &devicePath);
 std::string ConvertErrNo();
 void ScanInputDevicesPath(const std::string &dirName, std::vector<std::string> &vecInputDevPath);
 
+void WriteEventToDevice(const int fd, const input_event &event);
 /**
  * If we pressed the sink keyboard while mouse pass throuth from source to sink, we need reset the virtual keyboard
  * key states at the source side.