diff --git a/Src/Network.h b/Src/Network.h
index 21ca110..da3b076 100644
--- a/Src/Network.h
+++ b/Src/Network.h
@@ -101,6 +101,20 @@ struct NetworkUpdatePingAck
 	uint32 seq;
 };
 
+struct NetworkUpdateSoundInfo
+{
+	uint8 adr;
+	uint8 val;
+	uint8 delay_cycles;
+};
+
+struct NetworkUpdateSound
+{
+	uint16 n_items;
+	uint16 flags;
+	NetworkUpdateSoundInfo info[];
+};
+
 /*
  * Sent by the third-party broker server when someone wants to connect
  * to this machine.
diff --git a/Src/menu.h b/Src/menu.h
index 8191067..6cbb371 100644
--- a/Src/menu.h
+++ b/Src/menu.h
@@ -15,6 +15,8 @@
 #include <SDL.h>
 #include <SDL_ttf.h>
 #include <stdint.h>
+#include "sysdeps.h"
+#include "Network.h"
 
 #define KEY_UP         1
 #define KEY_DOWN       2