1 files changed, 1 insertions, 0 deletions

diff --git a/sound.c b/sound.c
index 6bf6a6884..1dd67e834 100644
--- a/sound.c
+++ b/sound.c
@@ -1,5 +1,6 @@
 #include "stdafx.h"
 #include "ttd.h"
+#include "map.h"
 #include "sound.h"
 #include "vehicle.h"
 #include "window.h"