diff --git a/README-zh.md b/README-zh.md
index 41e64d6..0f05722 100644
--- a/README-zh.md
+++ b/README-zh.md
@@ -24,7 +24,7 @@ wget https://get.vpnsetup.net -O vpn.sh && sudo sh vpn.sh
 
 你的 VPN 登录凭证将会被自动随机生成，并在安装完成后显示。
 
-安装完成后，你可以在同一台服务器上安装 [WireGuard](https://github.com/hwdsl2/wireguard-install/blob/master/README-zh.md) 和/或 [OpenVPN](https://github.com/hwdsl2/openvpn-install/blob/master/README-zh.md)。这是可选的。
+**可选：** 在同一台服务器上 [安装 WireGuard](https://github.com/hwdsl2/wireguard-install/blob/master/README-zh.md) 和/或 [OpenVPN](https://github.com/hwdsl2/openvpn-install/blob/master/README-zh.md)。
 
 <details>
 <summary>
@@ -131,7 +131,7 @@ VPN_PASSWORD='你的VPN密码' \
 sh vpn.sh
 ```
 
-安装完成后，你可以在同一台服务器上安装 [WireGuard](https://github.com/hwdsl2/wireguard-install/blob/master/README-zh.md) 和/或 [OpenVPN](https://github.com/hwdsl2/openvpn-install/blob/master/README-zh.md)。这是可选的。
+安装完成后，你可以在同一台服务器上 [安装 WireGuard](https://github.com/hwdsl2/wireguard-install/blob/master/README-zh.md) 和/或 [OpenVPN](https://github.com/hwdsl2/openvpn-install/blob/master/README-zh.md)。这是可选的。
 
 <details>
 <summary>
diff --git a/README.md b/README.md
index 4ae5a09..8a81196 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ wget https://get.vpnsetup.net -O vpn.sh && sudo sh vpn.sh
 
 Your VPN login details will be randomly generated, and displayed when finished.
 
-After setup, you may optionally install [WireGuard](https://github.com/hwdsl2/wireguard-install) and/or [OpenVPN](https://github.com/hwdsl2/openvpn-install) on the same server.
+**Optional:** [Install WireGuard](https://github.com/hwdsl2/wireguard-install) and/or [OpenVPN](https://github.com/hwdsl2/openvpn-install) on the same server.
 
 <details>
 <summary>
@@ -131,7 +131,7 @@ VPN_PASSWORD='your_vpn_password' \
 sh vpn.sh
 ```
 
-After setup, you may optionally install [WireGuard](https://github.com/hwdsl2/wireguard-install) and/or [OpenVPN](https://github.com/hwdsl2/openvpn-install) on the same server.
+After setup, you may optionally [install WireGuard](https://github.com/hwdsl2/wireguard-install) and/or [OpenVPN](https://github.com/hwdsl2/openvpn-install) on the same server.
 
 <details>
 <summary>