diff --git a/network.h b/network.h
--- a/network.h
+++ b/network.h
@@ -199,6 +199,7 @@ VARDEF uint8 _network_autoclean_protecte
 VARDEF uint16 _network_restart_game_date;    // If this year is reached, the server automaticly restarts
 
 NetworkGameList *NetworkQueryServer(const char* host, unsigned short port, bool game_info);
+void CSleep(int milliseconds);
 
 #endif /* ENABLE_NETWORK */