--- a/airport_gui.c Thu Nov 04 18:41:39 2004 +0000
+++ b/airport_gui.c Fri Nov 05 23:12:33 2004 +0000
@@ -5,6 +5,7 @@
#include "gui.h"
#include "viewport.h"
#include "gfx.h"
+#include "sound.h"
#include "command.h"
#include "vehicle.h"
#include "station.h"