diff -uNr hwinfo-21.60/src/isdn/isa_probe.c hwinfo-21.60.mod/src/isdn/isa_probe.c
--- hwinfo-21.60/src/isdn/isa_probe.c	2018-10-17 16:23:47.000000000 +0300
+++ hwinfo-21.60.mod/src/isdn/isa_probe.c	2019-06-26 13:35:29.558758182 +0300
@@ -1,7 +1,6 @@
 #if defined(__i386__)
 
 #include <stdio.h>
-#include <sys/io.h>
 
 #include "hd.h"
 #include "hd_int.h"
