2 files changed, 3 insertions, 2 deletions

diff --git a/usr.bin/du/Makefile b/usr.bin/du/Makefile
index 863e3921f58a4..d279a9702ca27 100644
--- a/usr.bin/du/Makefile
+++ b/usr.bin/du/Makefile
@@ -2,7 +2,7 @@
 # $FreeBSD$
 
 PROG=	du
-CFLAGS+= -Wall
+WARNS?=	2
 DPADD=	${LIBM}
 LDADD=	-lm
 
diff --git a/usr.bin/du/du.c b/usr.bin/du/du.c
index 85953418fbedb..9d44963af4648 100644
--- a/usr.bin/du/du.c
+++ b/usr.bin/du/du.c
@@ -117,6 +117,7 @@ main(argc, argv)
 	int		depth;
 	int		Hflag, Lflag, Pflag, aflag, sflag, dflag, cflag, hflag, ch, notused, rval;
 	char 		**save;
+	static char	dot[] = ".";
 
 	Hflag = Lflag = Pflag = aflag = sflag = dflag = cflag = hflag = 0;
 	
@@ -225,7 +226,7 @@ main(argc, argv)
 
 	if (!*argv) {
 		argv = save;
-		argv[0] = ".";
+		argv[0] = dot;
 		argv[1] = NULL;
 	}