diff --git a/openmptcprouter/files/etc/init.d/openmptcprouter-vps b/openmptcprouter/files/etc/init.d/openmptcprouter-vps
index 2e623ac34..f218d2d81 100755
--- a/openmptcprouter/files/etc/init.d/openmptcprouter-vps
+++ b/openmptcprouter/files/etc/init.d/openmptcprouter-vps
@@ -1709,6 +1709,7 @@ _config_service() {
 			vps_aes="$(echo "$vps_config" | jsonfilter -q -e '@.vps.aes')"
 			if [ "$vps_aes" != "false" ] && [ "$user_permission" != "ro" ]; then
 				logger -t "OMR-VPS" "CPU support AES, set it by default"
+				method="$(uci -q get shadowsocks-libev.sss0.method)"
 				uci -q batch <<-EOF >/dev/null
 					set glorytun.vpn.chacha20="0"
 					commit glorytun
@@ -1717,6 +1718,7 @@ _config_service() {
 				EOF
 				config_foreach _set_ss_server server "method" "aes-256-gcm"
 				uci -q commit shadowsocks-libev
+				[ "$method" != "aes-256-gcm" ] && /etc/init.d/shadowsocks-libev restart
 			fi
 		}
 	fi