diff --git a/intention/cooperate/plugin/include/input_event_transmission/input_event_serialization.h b/intention/cooperate/plugin/include/input_event_transmission/input_event_serialization.h
index 99d7ad33c..8d4eb4741 100644
--- a/intention/cooperate/plugin/include/input_event_transmission/input_event_serialization.h
+++ b/intention/cooperate/plugin/include/input_event_transmission/input_event_serialization.h
@@ -34,6 +34,7 @@ public:
     static int32_t NetPacketToKeyEvent(NetPacket &pkt, std::shared_ptr<MMI::KeyEvent> key);
     static int32_t SwitchEventToNetPacket(const std::shared_ptr<MMI::SwitchEvent> key, NetPacket &pkt);
     static int32_t NetPacketToSwitchEvent(NetPacket &pkt, std::shared_ptr<MMI::SwitchEvent> key);
+    static int32_t HeartBeatMarshalling(NetPacket &pkt);
     static int32_t Marshalling(std::shared_ptr<MMI::PointerEvent> event, NetPacket &pkt);
     static int32_t Unmarshalling(NetPacket &pkt, std::shared_ptr<MMI::PointerEvent> event);
 #ifdef OHOS_BUILD_ENABLE_SECURITY_PART