--- usr.bin/du/du.c.orig	2011-04-30 19:09:26.000000000 +0200
+++ usr.bin/du/du.c	2011-04-30 19:10:22.000000000 +0200
@@ -51,6 +51,10 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 
+#ifdef __NetBSD__
+#include <sys/param.h>
+#endif
+
 #if HAVE_NBCOMPAT_H
 #include <nbcompat.h>
 #endif
