diff --git a/comms/snap7/Makefile b/comms/snap7/Makefile
index b5db15f5d61c..cecf181d7b1d 100644
--- a/comms/snap7/Makefile
+++ b/comms/snap7/Makefile
@@ -1,32 +1,30 @@
 # Created by: Vladimir Grebenschikov
 
 PORTNAME=	snap7
 PORTVERSION=	1.4.2
 DISTVERSIONPREFIX=	full-
 CATEGORIES=	comms
 MASTER_SITES=	SF/snap7/${PORTVERSION}
 EXTRACT_SUFX=	.7z
 
 MAINTAINER=	vova@fbsd.ru
 COMMENT=	Multi-platform Ethernet S7 PLC communication suite
 
 LICENSE=	GPLv3
 
-ONLY_FOR_ARCHS=	amd64 armv6 i386 mips powerpc64 powerpc64le powerpc
-
 USES=		gmake
 USE_LDCONFIG=	yes
 
 WRKSRC_SUBDIR=	build/unix
 
 MAKE_ARGS=	CC=${CC} CXX=${CXX} LinkerName=${CXX} SharedObjectLinkerName="${CXX} -shared -fPIC"
 
 PLIST_FILES=	lib/libsnap7.so include/snap7.h share/examples/snap7/c-cpp/snap7.cpp
 
 SNAP_ARCH=	${ARCH:S/amd64/x86_64/:S/armv6/arm_v6/}
 MAKEFILE=	${SNAP_ARCH}_bsd.mk
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libsnap7.so
 
 .include <bsd.port.mk>
diff --git a/comms/snap7/files/patch-aarch64__bsd.mk b/comms/snap7/files/patch-aarch64__bsd.mk
new file mode 100644
index 000000000000..93fca6aa0da8
--- /dev/null
+++ b/comms/snap7/files/patch-aarch64__bsd.mk
@@ -0,0 +1,15 @@
+--- aarch64_bsd.mk.orig	2021-07-21 15:55:09 UTC
++++ aarch64_bsd.mk
+@@ -0,0 +1,12 @@
++##
++## aarch64 BSD based (FreeBSD etc.) Makefile
++## Use gmake instead of make
++##
++TargetCPU  :=aarch64
++OS         :=bsd
++CXXFLAGS   := -O3 -g -fPIC -pedantic
++
++# Standard part
++
++include common.mk
++