diff --git a/src/lib/WireGuard.js b/src/lib/WireGuard.js
index 529b0620..a05da96c 100644
--- a/src/lib/WireGuard.js
+++ b/src/lib/WireGuard.js
@@ -55,7 +55,7 @@ module.exports = class WireGuard {
         await Util.exec('wg-quick down wg0').catch(() => {});
         await Util.exec('wg-quick up wg0');
         await Util.exec(`iptables -t nat -A POSTROUTING -s ${WG_DEFAULT_ADDRESS.replace('x', '0')}/24 -o eth0 -j MASQUERADE`);
-        await Util.exec('iptables -A INPUT -p udp -m udp --dport 51820 -j ACCEPT');
+        await Util.exec(`iptables -A INPUT -p udp -m udp --dport ${WG_PORT} -j ACCEPT`);
         await Util.exec('iptables -A FORWARD -i wg0 -j ACCEPT');
         await Util.exec('iptables -A FORWARD -o wg0 -j ACCEPT');
         await this.__syncConfig();