diff --git a/usr.sbin/zdump/Makefile b/usr.sbin/zdump/Makefile
index a061c410137..f7f15697d05 100644
--- a/usr.sbin/zdump/Makefile
+++ b/usr.sbin/zdump/Makefile
@@ -1,6 +1,8 @@
-#	$OpenBSD: Makefile,v 1.4 2015/02/09 12:37:47 tedu Exp $
+#	$OpenBSD: Makefile,v 1.5 2015/02/09 13:04:58 tedu Exp $
 
 PROG=	zdump
 MAN=	zdump.8
 
+CFLAGS+=-Wall
+
 .include <bsd.prog.mk>
diff --git a/usr.sbin/zic/Makefile b/usr.sbin/zic/Makefile
index c1ffd22d79b..3b881e3c521 100644
--- a/usr.sbin/zic/Makefile
+++ b/usr.sbin/zic/Makefile
@@ -1,9 +1,9 @@
-#	$OpenBSD: Makefile,v 1.4 2015/02/09 12:37:47 tedu Exp $
+#	$OpenBSD: Makefile,v 1.5 2015/02/09 13:04:58 tedu Exp $
 
 PROG=	zic
 SRCS=	zic.c scheck.c
 MAN=	zic.8
 
-CFLAGS+=-I${.CURDIR}/../../lib/libc/time
+CFLAGS+=-I${.CURDIR}/../../lib/libc/time -Wall
 
 .include <bsd.prog.mk>