diff --git a/sys/modules/nlsysevent/Makefile b/sys/modules/nlsysevent/Makefile
index d7d2100e3e66..6ec36f53ca8f 100644
--- a/sys/modules/nlsysevent/Makefile
+++ b/sys/modules/nlsysevent/Makefile
@@ -1,11 +1,11 @@
 # $FreeBSD$
 
 .PATH:	${SRCTOP}/sys/netlink/
 
 KMOD=	nlsysevent
 SRCS=	netlink_sysevent.c
 
 CFLAGS+=	-I${SRCTOP}/sys/contrib/netlink
-EXPORT_SYMS=	yes
+EXPORT_SYMS=	YES
 
 .include <bsd.kmod.mk>