diff --git a/usr.bin/systat/Makefile b/usr.bin/systat/Makefile
index 672aadcea5ae..bb279d56e8c8 100644
--- a/usr.bin/systat/Makefile
+++ b/usr.bin/systat/Makefile
@@ -14,7 +14,7 @@ SRCS+=	icmp6.c ip6.c
 CFLAGS+= -DINET6
 .endif
 
-WARNS?=	0
+WARNS?=	1
 
 LIBADD=	ncursesw m devstat kvm