diff --git a/debian/shadowsocks-libev.service b/debian/shadowsocks-libev.service
index 9277396b..16e0a9e0 100644
--- a/debian/shadowsocks-libev.service
+++ b/debian/shadowsocks-libev.service
@@ -16,8 +16,8 @@ After=network.target
 Type=simple
 EnvironmentFile=/etc/default/shadowsocks-libev
 User=root
-#Group=$GROUP
-#LimitNOFILE=$MAXFD
+Group=$GROUP
+LimitNOFILE=$MAXFD
 ExecStart=/usr/bin/ss-server -a $USER -c $CONFFILE $DAEMON_ARGS
 
 [Install]