diff --git a/sysutils/btop/Makefile b/sysutils/btop/Makefile
index 8be82a92b891..2c6cac5f9669 100644
--- a/sysutils/btop/Makefile
+++ b/sysutils/btop/Makefile
@@ -1,19 +1,21 @@
 PORTNAME=	btop
 DISTVERSIONPREFIX=	v
 DISTVERSION=	1.2.7
 CATEGORIES=	sysutils
 
 MAINTAINER=	pkubaj@FreeBSD.org
 COMMENT=	Monitor of resources
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USES=		gmake
 USE_GCC=	yes
 USE_GITHUB=	yes
 GH_ACCOUNT=	aristocratos
 
+CXXFLAGS_i386=	-latomic
+CXXFLAGS_powerpc=	-latomic
 MAKE_ARGS=	STRIP=true ADDFLAGS="${CXXFLAGS} ${LDFLAGS}"
 
 .include <bsd.port.mk>