diff --git a/在-Linode-上快速搭建-Shadowsocks.md b/在-Linode-上快速搭建-Shadowsocks.md
index 4de8cee..388e66a 100644
--- a/在-Linode-上快速搭建-Shadowsocks.md
+++ b/在-Linode-上快速搭建-Shadowsocks.md
@@ -37,4 +37,4 @@ shadowsocks                      RUNNING    pid 6929, uptime 0:01:25
 }
 ```
 
-注：使用本安装脚本会自动[优化系统参数](https://github.com/clowwindy/shadowsocks/wiki/Optimizing-Shadowsocks)。
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+注：使用本安装脚本会自动[优化系统参数](https://github.com/clowwindy/shadowsocks/wiki/Optimizing-Shadowsocks)。不过其中 hybla 算法的优化需要[更换内核](https://library.linode.com/custom-instances/pv-grub-howto#sph_debian-7-wheezy)后才能生效。
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