diff --git a/town_cmd.c b/town_cmd.c
--- a/town_cmd.c
+++ b/town_cmd.c
@@ -1,6 +1,7 @@
 #include "stdafx.h"
 #include "ttd.h"
 #include "table/strings.h"
+#include "map.h"
 #include "viewport.h"
 #include "town.h"
 #include "command.h"