default.diff

diff --git a/src/common/IPC.h b/src/common/IPC.h
index cab883f..d1fcaee 100644
--- a/src/common/IPC.h
+++ b/src/common/IPC.h
@@ -209,7 +209,7 @@ template<> struct SerializeTraits<std::string> {
 };
 
 // IPC message, which automatically serializes and deserializes objects
-template<typename... T> class Message {
+template<uint32_t Major, uint32_t Minor, typename... T> class Message {
 	typedef std::tuple<T...> TupleType;
 
 	template<size_t Index, typename Tuple> static void FillTuple(Tuple&, Reader&) {}
@@ -240,6 +240,8 @@ public:
 	template<typename... Args> static void Serialize(Writer& stream, Args&&... args)
 	{
 		static_assert(sizeof...(Args) == sizeof...(T), "Incorrect number of arguments for IPC::Message::Serialize");
+		SerializeTraits<uint32_t>::Write(stream, Major);
+		SerializeTraits<uint32_t>::Write(stream, Minor);
 		SerializeImpl<0>(stream, std::forward<Args>(args)...);
 	}