diff --git a/sbin/gvinum/Makefile b/sbin/gvinum/Makefile
index 7b7076527cd..4caa775be2e 100644
--- a/sbin/gvinum/Makefile
+++ b/sbin/gvinum/Makefile
@@ -5,6 +5,7 @@ PROG=	gvinum
 SRCS=	gvinum.c gvinum.h geom_vinum_share.c
 MAN=	gvinum.8
 
+WARNS=		2
 CFLAGS+=	-I${SRCTOP}/sys -I${SYSROOT:U${DESTDIR}}/${INCLUDEDIR}/edit
 
 LIBADD=	edit geom