diff --git a/lib/netplay/netplay.h b/lib/netplay/netplay.h
index ff7569ddd6e..e16e5d21b34 100644
--- a/lib/netplay/netplay.h
+++ b/lib/netplay/netplay.h
@@ -141,7 +141,7 @@ enum MESSAGE_TYPES
 	GAME_MAX_TYPE,                  ///< Maximum+1 valid GAME_ type, *MUST* be last.
 
 	// The following messages are used for playing back replays.
-	REPLAY_ENDED					///< A special message for signifying the end of the replay
+	REPLAY_ENDED = 255				///< A special message for signifying the end of the replay
 	// End of replay messages.
 };