diff --git a/src/town.h b/src/town.h
index 3e021756a2..ad63594df5 100644
--- a/src/town.h
+++ b/src/town.h
@@ -17,6 +17,7 @@
 #include "strings_type.h"
 #include "viewport_type.h"
 #include "economy_type.h"
+#include "map_type.h"
 
 enum {
 	HOUSE_NO_CLASS   = 0,