Index: head/math/moo/Makefile
===================================================================
--- head/math/moo/Makefile	(revision 442834)
+++ head/math/moo/Makefile	(revision 442835)
@@ -1,30 +1,30 @@
 # Created by: Steven Kreuzer <skreuzer@f2o.org>
 # $FreeBSD$
 
 PORTNAME=	moo
 PORTVERSION=	1.5
 PORTREVISION=	1
 CATEGORIES=	math
 
 MAINTAINER=	skreuzer@FreeBSD.org
 COMMENT=	Calculator that accepts C-like syntax as input
 
 LICENSE=	PD
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	raylai
 GH_TAGNAME=	${PORTVERSION}
 
 PLIST_FILES=	bin/moo man/man1/moo.1.gz
 
-.if exists(/usr/include/sys/capsicum.h)
+.if exists(/usr/include/sys/capsicum.h) && exists(/usr/include/capsicum_helpers.h)
 CFLAGS+=	-DHAVE_CAPSICUM
 .endif
 
 MAKE_JOBS_UNSAFE=	yes
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/moo ${STAGEDIR}${PREFIX}/bin/
 	${INSTALL_MAN} ${WRKSRC}/moo.1 ${STAGEDIR}${MANPREFIX}/man/man1
 
 .include <bsd.port.mk>