diff --git a/graphics/libglvnd/Makefile b/graphics/libglvnd/Makefile
index f54418205347..5315970b50a8 100644
--- a/graphics/libglvnd/Makefile
+++ b/graphics/libglvnd/Makefile
@@ -1,39 +1,42 @@
 PORTNAME=	libglvnd
 DISTVERSION=	1.4.0
 PORTREVISION=	1
 CATEGORIES=	graphics
 
 MAINTAINER=	x11@FreeBSD.org
 COMMENT=	GL Vendor-Neutral Dispatch library
 
 LICENSE=	APACHE20 MIT
 LICENSE_COMB=	multi
 
 USES=		compiler:c++11-lib localbase meson pkgconfig
 USE_LDCONFIG=	yes
 
 USE_GITLAB=	yes
 GL_SITE=	https://gitlab.freedesktop.org
 GL_ACCOUNT=	glvnd
 GL_COMMIT=	8f3c5b17a21e2222ab3e5fd38870b915815aca49
 
 OPTIONS_DEFINE=	X11
 OPTIONS_DEFAULT=X11
 OPTIONS_SUB=	yes
 
 X11_USES=		xorg
 X11_USE=		XORG=x11,xext,xorgproto
 X11_MESON_ENABLED=	x11 glx
 
 .include <bsd.port.options.mk>
 
-.if ${ARCH:Mpowerpc64*}
+.if ${ARCH} == powerpc64le
 BUILD_DEPENDS=	as:devel/binutils
 CFLAGS+=	-no-integrated-as
+.elif ${ARCH} == powerpc64
+BUILD_DEPENDS=	as:devel/binutils
+CFLAGS+=	-no-integrated-as -O0
 .endif
 
 # Lots of software expects gl.pc even when it can build with EGL only
 post-install-X11-off:
 	${LN} -s opengl.pc ${STAGEDIR}${PREFIX}/libdata/pkgconfig/gl.pc
 
 .include <bsd.port.mk>