diff --git a/network.h b/network.h
--- a/network.h
+++ b/network.h
@@ -184,6 +184,8 @@ VARDEF bool _network_autoclean_companies
 VARDEF uint8 _network_autoclean_unprotected; // Remove a company after X months
 VARDEF uint8 _network_autoclean_protected;   // Unprotect a company after X months
 
+VARDEF uint16 _network_restart_game_date;    // If this year is reached, the server automaticly restarts
+
 NetworkGameList *NetworkQueryServer(const byte* host, unsigned short port, bool game_info);
 
 #endif /* ENABLE_NETWORK */