diff --git a/economy.c b/economy.c
--- a/economy.c
+++ b/economy.c
@@ -1,6 +1,7 @@
 #include "stdafx.h"
 #include "ttd.h"
 #include "table/strings.h"
+#include "map.h"
 #include "news.h"
 #include "player.h"
 #include "station.h"