diff --git a/libguile/filesys.c b/libguile/filesys.c
index 976409494..39e40b8cd 100644
--- a/libguile/filesys.c
+++ b/libguile/filesys.c
@@ -1,4 +1,4 @@
-/*	Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+/*	Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
  * 
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -48,7 +48,12 @@
 #include "iselect.h"
 
 #include "filesys.h"
+
 
+#ifdef HAVE_IO_H
+#include <io.h>
+#endif
+
 #ifdef TIME_WITH_SYS_TIME
 # include <sys/time.h>
 # include <time.h>
diff --git a/libguile/scmconfig.h.in b/libguile/scmconfig.h.in
index a3dc01b98..dde611a02 100644
--- a/libguile/scmconfig.h.in
+++ b/libguile/scmconfig.h.in
@@ -356,6 +356,9 @@
 /* Define if you have the <dirent.h> header file.  */
 #undef HAVE_DIRENT_H
 
+/* Define if you have the <io.h> header file.  */
+#undef HAVE_IO_H
+
 /* Define if you have the <libc.h> header file.  */
 #undef HAVE_LIBC_H