diff --git a/usr.bin/du/du.c b/usr.bin/du/du.c
index ef05fc734e21..02ed7b09e237 100644
--- a/usr.bin/du/du.c
+++ b/usr.bin/du/du.c
@@ -112,7 +112,8 @@ main(int argc, char *argv[])
 	int		ftsoptions;
 	int		listall;
 	int		depth;
-	int		Hflag, Lflag, Pflag, aflag, sflag, dflag, cflag, hflag, ch, notused, rval;
+	int		Hflag, Lflag, Pflag, aflag, sflag, dflag, cflag, hflag, ch, rval;
+	size_t		notused;
 	char 		**save;
 	static char	dot[] = ".";