Index: head/chinese/ibus-rime/Makefile
===================================================================
--- head/chinese/ibus-rime/Makefile	(revision 558412)
+++ head/chinese/ibus-rime/Makefile	(revision 558413)
@@ -1,28 +1,29 @@
 # Created by: Ka Ho Ng <khng300@gmail.com>
 # $FreeBSD$
 
 PORTNAME=	ibus-rime
 DISTVERSION=	1.4.0-14
 CATEGORIES=	chinese
 
 MAINTAINER=	khng300@gmail.com
 COMMENT=	IBus engine for Rime users
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	zh-rime-data>=g0:chinese/rime-data
 LIB_DEPENDS=	libibus-1.0.so:textproc/ibus \
 		libnotify.so:devel/libnotify \
 		librime.so:chinese/librime
 RUN_DEPENDS=	zh-rime-data>=g0:chinese/rime-data
 
 USES=		cmake gnome pkgconfig
+USE_CSTD=	c99
 
 INSTALLS_ICONS=		yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	rime
 GH_TAGNAME=	bfabe67
 
 .include <bsd.port.mk>