diff --git a/graphics/gpu-firmware-amd-kmod/Makefile b/graphics/gpu-firmware-amd-kmod/Makefile
index acb7e22ab80e..2181af01de04 100644
--- a/graphics/gpu-firmware-amd-kmod/Makefile
+++ b/graphics/gpu-firmware-amd-kmod/Makefile
@@ -1,69 +1,74 @@
 # Created by: Emmanuel Vadot <manu@FreeBSD.org>
 
 PORTNAME=	gpu-firmware-amd-kmod
 PORTVERSION=	20220511
 CATEGORIES=	graphics
 
 MAINTAINER=	x11@FreeBSD.org
 COMMENT=	Firmware modules for ${FLAVOR} AMD GPUs
 
 LICENSE=	AMD
 LICENSE_NAME=	AMD firmware license (amdgpu/radeon)
 LICENSE_FILE=	${WRKSRC}/LICENSE.radeon
 LICENSE_PERMS=	dist-mirror no-dist-sell pkg-mirror no-pkg-sell auto-accept
 
 ONLY_FOR_ARCHS=		aarch64 amd64 i386 powerpc64le
 ONLY_FOR_ARCHS_REASON=	AMD GPUs are only available on aarch64, x86 and powerpc64le
 
 PKGNAMESUFFIX=	-${FLAVOR:C/_/-/g}
 FLAVORS=	banks \
 		bonaire \
 		carrizo \
 		fiji \
 		hainan \
 		hawaii \
 		kabini \
 		kaveri \
 		mullins \
 		navi10 \
 		navi12 \
 		navi14 \
 		oland \
 		picasso \
 		pitcairn \
 		polaris10 \
 		polaris11 \
 		polaris12 \
 		raven \
 		raven2 \
 		renoir \
 		si58 \
 		stoney \
 		tahiti \
 		tonga \
 		topaz \
 		vega10 \
 		vega12 \
 		vega20 \
 		vegam \
 		verde \
 		green_sardine \
 		sienna_cichlid
 FLAVOR?=	banks
 
+green_sardine_IGNORE_FreeBSD_12=	"Not supported on < 13.1"
+green_sardine_IGNORE_FreeBSD_13.0=	"Not supported on < 13.1"
+sienna_cichlid_IGNORE_FreeBSD_12=	"Not supported on < 13.1"
+sienna_cichlid_IGNORE_FreeBSD_13.0=	"Not supported on < 13.1"
+
 USES=		kmod uidfix
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	freebsd
 GH_PROJECT=	drm-kmod-firmware
 GH_TAGNAME=	20220511
 
 MAKE_ENV=	KMODS="amdgpukmsfw"
 MAKE_ENV+=	AMDGPUKMODS="${FLAVOR}"
 
 .include <bsd.port.pre.mk>
 
 PLIST_SUB+=	${FLAVORS:N${FLAVOR}:@v@${v:tu}="\@comment "@}
 PLIST_SUB+=	${FLAVOR:tu}=""
 
 .include <bsd.port.post.mk>