diff --git a/usr.sbin/kgzip/Makefile b/usr.sbin/kgzip/Makefile
index ce7ffbd40d55..013c65fe33c9 100644
--- a/usr.sbin/kgzip/Makefile
+++ b/usr.sbin/kgzip/Makefile
@@ -4,4 +4,6 @@ PROG=	kgzip
 MAN=	kgzip.8
 SRCS=	kgzip.c aouthdr.c elfhdr.c kgzcmp.c kgzld.c xio.c
 
+WARNS?=	3
+
 .include <bsd.prog.mk>