diff --git a/external/mit/xorg/server/drivers/xf86-video-suncg14/Makefile b/external/mit/xorg/server/drivers/xf86-video-suncg14/Makefile
index b445645731c7..e140cb4a1420 100644
--- a/external/mit/xorg/server/drivers/xf86-video-suncg14/Makefile
+++ b/external/mit/xorg/server/drivers/xf86-video-suncg14/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.6 2016/08/16 06:24:02 mrg Exp $
+#	$NetBSD: Makefile,v 1.7 2016/09/27 19:15:10 joerg Exp $
 
 DRIVER=		xf86-video-suncg14
 DRIVER_NAME=	suncg14_drv
@@ -7,5 +7,6 @@ SRCS=		cg14_driver.c cg14_cursor.c cg14_accel.c cg14_render.c
 MAN=		suncg14.4
 
 CPPFLAGS+=	-I${X11SRCDIR.${DRIVER}}/../include
+CWARNFLAGS.clang+=	-Wno-pointer-sign
 
 .include "../Makefile.xf86-driver"
diff --git a/external/mit/xorg/server/drivers/xf86-video-suntcx/Makefile b/external/mit/xorg/server/drivers/xf86-video-suntcx/Makefile
index 80e8a19730c6..66fcc8a5888a 100644
--- a/external/mit/xorg/server/drivers/xf86-video-suntcx/Makefile
+++ b/external/mit/xorg/server/drivers/xf86-video-suntcx/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.3 2016/08/16 06:24:03 mrg Exp $
+#	$NetBSD: Makefile,v 1.4 2016/09/27 19:15:09 joerg Exp $
 
 DRIVER=		xf86-video-suntcx
 DRIVER_NAME=	suntcx_drv
@@ -9,4 +9,6 @@ CPPFLAGS+=	${X11FLAGS.DRI}
 
 MAN=		suntcx.4
 
+CWARNFLAGS.clang+=	-Wno-pointer-sign
+
 .include "../Makefile.xf86-driver"