diff --git a/lib/libalias/Makefile b/lib/libalias/Makefile
index 87b3e9a97bb..334d02f5723 100644
--- a/lib/libalias/Makefile
+++ b/lib/libalias/Makefile
@@ -8,5 +8,6 @@ SRCS=	alias.c alias_cuseeme.c alias_db.c alias_ftp.c alias_irc.c \
 	alias_nbt.c alias_pptp.c alias_proxy.c alias_skinny.c alias_smedia.c \
 	alias_util.c alias_old.c
 INCS=	alias.h
+WARNS?=	2
 
 .include <bsd.lib.mk>
diff --git a/sys/netinet/libalias/Makefile b/sys/netinet/libalias/Makefile
index 87b3e9a97bb..334d02f5723 100644
--- a/sys/netinet/libalias/Makefile
+++ b/sys/netinet/libalias/Makefile
@@ -8,5 +8,6 @@ SRCS=	alias.c alias_cuseeme.c alias_db.c alias_ftp.c alias_irc.c \
 	alias_nbt.c alias_pptp.c alias_proxy.c alias_skinny.c alias_smedia.c \
 	alias_util.c alias_old.c
 INCS=	alias.h
+WARNS?=	2
 
 .include <bsd.lib.mk>