--- a/industry_cmd.c	Thu Jul 21 21:13:42 2005 +0000
+++ b/industry_cmd.c	Thu Jul 21 22:15:02 2005 +0000
@@ -13,6 +13,7 @@
 #include "saveload.h"
 #include "economy.h"
 #include "sound.h"
+#include "variables.h"
 
 enum {
 	/* Max industries: 64000 (8 * 8000) */