diff --git a/map.c b/map.c
--- a/map.c
+++ b/map.c
@@ -2,6 +2,7 @@
 #include "openttd.h"
 #include "debug.h"
 #include "functions.h"
+#include "macros.h"
 #include "map.h"
 
 uint _map_log_x;