diff --git a/devel/glog/Makefile b/devel/glog/Makefile
index 7751a837a4ac..ca09c2e4b09a 100644
--- a/devel/glog/Makefile
+++ b/devel/glog/Makefile
@@ -1,32 +1,34 @@
 PORTNAME=	glog
 PORTVERSION=	0.7.1
 DISTVERSIONPREFIX=	v
 CATEGORIES=	devel
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Library of C++ classes for flexible logging
 WWW=		https://github.com/google/glog
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 LIB_DEPENDS=	libgflags.so:devel/gflags \
 		libunwind.so:devel/libunwind
 TEST_DEPENDS=	googletest>=0:devel/googletest
 
 USES=		cmake:testing compiler:c++14-lang
 
 CMAKE_ARGS=	-DWITH_FUZZING=none -DWITH_UNWIND=libunwind
 CMAKE_OFF=	PRINT_UNSYMBOLIZED_STACK_TRACES WITH_GMOCK WITH_GTEST
 CMAKE_ON=	BUILD_SHARED_LIBS WITH_GFLAGS WITH_PKGCONFIG WITH_SYMBOLIZE WITH_TLS
 CMAKE_TESTING_ON=	WITH_GMOCK WITH_GTEST
 LDFLAGS+=	-lexecinfo
 USE_CXXSTD=	c++14
 USE_LDCONFIG=	yes
 
 PLIST_SUB=	PORTVERSION=${PORTVERSION}
 
 GH_ACCOUNT=	google
 USE_GITHUB=	yes
 
+CXXFLAGS_powerpc=	-D_CALL_SYSV
+
 .include <bsd.port.mk>