diff --git a/src/lib/WireGuard.js b/src/lib/WireGuard.js
index a0c2b217..935f7553 100644
--- a/src/lib/WireGuard.js
+++ b/src/lib/WireGuard.js
@@ -252,7 +252,7 @@ Endpoint = ${WG_HOST}:${WG_PORT}`;
 
     const config = await this.getConfig();
     const privateKey = await Util.exec('wg genkey');
-    const publicKey = await Util.exec(`echo ${privateKey} | wg pubkey`);
+    const publicKey = await Util.exec(`echo ${privateKey} | wg pubkey`, privateKey);
     const preSharedKey = await Util.exec('wg genpsk');
 
     // Calculate next IP