diff --git a/.SRCINFO b/.SRCINFO
index b42c7d3..54d18d3 100644
--- a/.SRCINFO
+++ b/.SRCINFO
@@ -1,7 +1,7 @@
 pkgbase = softethervpn
 	pkgdesc = Multi-protocol VPN Program from University of Tsukuba
 	pkgver = v4.25_9656
-	pkgrel = 3
+	pkgrel = 4
 	url = http://www.softether.org/
 	arch = i686
 	arch = x86_64
@@ -12,10 +12,12 @@ pkgbase = softethervpn
 	depends = openssl
 	depends = zlib
 	source = http://www.softether-download.com/files/softether/v4.25-9656-rtm-2018.01.15-tree/Source_Code/softether-src-v4.25-9656-rtm.tar.gz
+	source = aarch64.patch
 	source = softethervpn-bridge.service
 	source = softethervpn-client.service
 	source = softethervpn-server.service
 	sha1sums = 5ceb11866af212278c8a151bb40a2a048bdd7fea
+	sha1sums = 75d351833c41ee4c54d4ad18dde678e6df47e220
 	sha1sums = 12a3919aabcdd7531320056a4b43072892232925
 	sha1sums = ba594c7defb52548369726c56e2cad633019abef
 	sha1sums = 06cd320553daf0dffdf6a81a22d630fbe211fc33
diff --git a/PKGBUILD b/PKGBUILD
index 9fbc85a..2fca67d 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -2,14 +2,16 @@
 # Maintainer: Jonathan Liu <net147@gmail.com>
 pkgname=softethervpn
 pkgver=v4.25_9656
-pkgrel=3
+pkgrel=4
 pkgdesc="Multi-protocol VPN Program from University of Tsukuba"
 arch=('i686' 'x86_64' 'aarch64' 'armv7h')
 source=('http://www.softether-download.com/files/softether/v4.25-9656-rtm-2018.01.15-tree/Source_Code/softether-src-v4.25-9656-rtm.tar.gz'
+        'aarch64.patch'
         'softethervpn-bridge.service'
         'softethervpn-client.service'
         'softethervpn-server.service')
 sha1sums=('5ceb11866af212278c8a151bb40a2a048bdd7fea'
+          '75d351833c41ee4c54d4ad18dde678e6df47e220'
           '12a3919aabcdd7531320056a4b43072892232925'
           'ba594c7defb52548369726c56e2cad633019abef'
           '06cd320553daf0dffdf6a81a22d630fbe211fc33')
@@ -19,6 +21,7 @@ url="http://www.softether.org/"
 
 build(){
   cd "${srcdir}/${pkgver//_/-}"
+  patch -Np1 -i "${srcdir}/aarch64.patch"
 
   if [ "${CARCH}" == "i686" ]; then
     cp src/makefiles/linux_32bit.mak Makefile
diff --git a/aarch64.patch b/aarch64.patch
new file mode 100644
index 0000000..cc11ba4
--- /dev/null
+++ b/aarch64.patch
@@ -0,0 +1,37 @@
+From 1d4d7f538065462a76cfe258ee5151dee03ae85f Mon Sep 17 00:00:00 2001
+From: Denis Lesnov <den.lesnov@gmail.com>
+Date: Thu, 22 Dec 2016 18:10:52 +0300
+Subject: [PATCH] fix aarch64 build
+
+---
+ src/makefiles/linux_64bit.mak | 14 ++++++++++----
+ 1 file changed, 10 insertions(+), 4 deletions(-)
+
+diff --git a/src/makefiles/linux_64bit.mak b/src/makefiles/linux_64bit.mak
+index 0fd8c018..1f81ab7f 100644
+--- a/src/makefiles/linux_64bit.mak
++++ b/src/makefiles/linux_64bit.mak
+@@ -25,13 +25,19 @@
+ 
+ #CC=gcc
+ 
+-OPTIONS_COMPILE_DEBUG=-D_DEBUG -DDEBUG -DUNIX -DUNIX_LINUX -DCPU_64 -D_REENTRANT -DREENTRANT -D_THREAD_SAFE -D_THREADSAFE -DTHREAD_SAFE -DTHREADSAFE -D_FILE_OFFSET_BITS=64 -I./src/ -I./src/Cedar/ -I./src/Mayaqua/ -g -fsigned-char -m64
++ifeq ($(shell uname -m),aarch64)
++	M64:=
++else
++	M64:=-m64
++endif
++
++OPTIONS_COMPILE_DEBUG=-D_DEBUG -DDEBUG -DUNIX -DUNIX_LINUX -DCPU_64 -D_REENTRANT -DREENTRANT -D_THREAD_SAFE -D_THREADSAFE -DTHREAD_SAFE -DTHREADSAFE -D_FILE_OFFSET_BITS=64 -I./src/ -I./src/Cedar/ -I./src/Mayaqua/ -g -fsigned-char $(M64)
+ 
+-OPTIONS_LINK_DEBUG=-g -fsigned-char -m64 -lm -ldl -lrt -lpthread -lssl -lcrypto -lreadline -lncurses -lz
++OPTIONS_LINK_DEBUG=-g -fsigned-char $(M64) -lm -ldl -lrt -lpthread -lssl -lcrypto -lreadline -lncurses -lz
+ 
+-OPTIONS_COMPILE_RELEASE=-DNDEBUG -DVPN_SPEED -DUNIX -DUNIX_LINUX -DCPU_64 -D_REENTRANT -DREENTRANT -D_THREAD_SAFE -D_THREADSAFE -DTHREAD_SAFE -DTHREADSAFE -D_FILE_OFFSET_BITS=64 -I./src/ -I./src/Cedar/ -I./src/Mayaqua/ -O2 -fsigned-char -m64
++OPTIONS_COMPILE_RELEASE=-DNDEBUG -DVPN_SPEED -DUNIX -DUNIX_LINUX -DCPU_64 -D_REENTRANT -DREENTRANT -D_THREAD_SAFE -D_THREADSAFE -DTHREAD_SAFE -DTHREADSAFE -D_FILE_OFFSET_BITS=64 -I./src/ -I./src/Cedar/ -I./src/Mayaqua/ -O2 -fsigned-char $(M64)
+ 
+-OPTIONS_LINK_RELEASE=-O2 -fsigned-char -m64 -lm -ldl -lrt -lpthread -lssl -lcrypto -lreadline -lncurses -lz
++OPTIONS_LINK_RELEASE=-O2 -fsigned-char $(M64) -lm -ldl -lrt -lpthread -lssl -lcrypto -lreadline -lncurses -lz
+ 
+ INSTALL_BINDIR=/usr/bin/
+ INSTALL_VPNSERVER_DIR=/usr/vpnserver/