--- sh.h.orig	Sat Sep 19 01:09:13 1998
+++ sh.h	Sat Sep 26 19:23:15 1998
@@ -1154,7 +1154,7 @@
 /*
  * To print system call errors...
  */
-#ifdef __NetBSD__
+#ifdef BSD4_4
 # include <errno.h>
 #else
 # ifndef linux
