diff --git a/x11-drivers/xf86-video-ast/Makefile b/x11-drivers/xf86-video-ast/Makefile
index d9c83f9a74d3..75923085ddfc 100644
--- a/x11-drivers/xf86-video-ast/Makefile
+++ b/x11-drivers/xf86-video-ast/Makefile
@@ -1,16 +1,19 @@
 PORTNAME=	xf86-video-ast
 DISTVERSION=	1.2.1
 CATEGORIES=	x11-drivers
 
 MAINTAINER=	x11@FreeBSD.org
 COMMENT=	X.Org ASPEED display driver
 WWW=		https://gitlab.freedesktop.org/xorg/driver/xf86-video-ast
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/COPYING
 
+ONLY_FOR_ARCHS=	i386 amd64
+ONLY_FOR_ARCHS_REASON=	Calls into x86-specific xorg/compiler.h functions
+
 USES=		tar:xz xorg-cat:driver
 
 PLIST_FILES=	lib/xorg/modules/drivers/ast_drv.so
 
 .include <bsd.port.mk>