diff --git a/multimedia/vapoursynth/Makefile b/multimedia/vapoursynth/Makefile
index eeee7de45fb2..71b389e6ebcd 100644
--- a/multimedia/vapoursynth/Makefile
+++ b/multimedia/vapoursynth/Makefile
@@ -1,32 +1,39 @@
 PORTNAME=	vapoursynth
 DISTVERSION=	R73
 CATEGORIES=	multimedia
 
 MAINTAINER=	multimedia@FreeBSD.org
 COMMENT=	Video processing framework with simplicity in mind
 WWW=		https://www.vapoursynth.com/
 
 LICENSE=	LGPL21+
 LICENSE_FILE=	${WRKSRC}/COPYING.LESSER
 
 LIB_DEPENDS=	libzimg.so:graphics/sekrit-twc-zimg
 
 USES=		compiler:c++17-lang meson pkgconfig python
 USE_PYTHON=	cython
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 
 WITH_LTO=	yes
 LDFLAGS+=	-lpthread
 
 MESON_ARGS=	-Dpython3_bin=${PYTHON_CMD}
 
 .include <bsd.port.options.mk>
 
 .if !defined(CPUTYPE) && ${ARCH} == amd64
 COMMENT+= (compatibility mode)
 MESON_ARGS+=    -Denable_x86_asm=false
 .endif
 
+.if defined(CPUTYPE) && ${ARCH} == amd64
+BUILD_FAIL_MESSAGE+= If CPUTYPE is defined but falls under requirements (support for AVX2 instruction set) the build will fail. \
+		Building without utilizing the instruction set is possible however with performance penalties. \
+		To disable don't define CPUTYPE during build. \
+
+.endif
+
 .include <bsd.port.mk>