Index: head/devel/py-sysctl/Makefile
===================================================================
--- head/devel/py-sysctl/Makefile	(revision 554727)
+++ head/devel/py-sysctl/Makefile	(revision 554728)
@@ -1,23 +1,23 @@
 # Created by: William Grzybowski <wg@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	sysctl
 PORTVERSION=	0.3.1.20201105
 CATEGORIES=	devel python
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	freqlabs@FreeBSD.org
 COMMENT=	Wrapper for the sysctl system functions
 
 LICENSE=	BSD2CLAUSE
 
-USES=		python
+USES=		compiler:c11 python
 USE_CSTD=	c99
 USE_PYTHON=	distutils autoplist
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	william-gr
 GH_PROJECT=	py-sysctl
 GH_TAGNAME=	5b111bd
 
 .include <bsd.port.mk>