diff --git a/bin/chio/Makefile b/bin/chio/Makefile
index 33bde4bac4dd..172032832c7a 100644
--- a/bin/chio/Makefile
+++ b/bin/chio/Makefile
@@ -2,7 +2,6 @@
 #	@(#)Makefile	8.1 (Berkeley) 6/6/93
 
 PROG=	chio
-WARNS?=	2
 SRCS=	chio.c
 
 .include <bsd.prog.mk>