diff --git a/src/lib/WireGuard.js b/src/lib/WireGuard.js
index 9b686f22..7198ed9d 100644
--- a/src/lib/WireGuard.js
+++ b/src/lib/WireGuard.js
@@ -54,8 +54,8 @@ module.exports = class WireGuard {
         }
 
         await this.__saveConfig(config);
-        await Util.exec('wg-quick down ' + WG_PATH + '/wg0').catch(() => { });
-        await Util.exec('wg-quick up ' + WG_PATH + '/wg0');
+        await Util.exec(`wg-quick down ${WG_PATH}/wg0`).catch(() => { });
+        await Util.exec(`wg-quick up ${WG_PATH}/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 FORWARD -i wg0 -j ACCEPT');