--- Gnu-Mach/device/subrs.c	2020/09/02 04:36:57	1.1.1.1
+++ Gnu-Mach/device/subrs.c	2020/09/02 04:42:59	1.1.1.2
@@ -110,7 +110,7 @@ geteblk(size)
 	register io_req_t	ior;
 
 	io_req_alloc(ior, 0);
-	ior->io_device = (device_t)0;
+	ior->io_device = (mach_device_t)0;
 	ior->io_unit = 0;
 	ior->io_op = 0;
 	ior->io_mode = 0;