diff --git a/openvpn-install.sh b/openvpn-install.sh
index 4d97cd4..6450db2 100755
--- a/openvpn-install.sh
+++ b/openvpn-install.sh
@@ -1,4 +1,5 @@
-#!/bin/bash
+#!/usr/bin/env bash
+set -euo pipefail
 
 # Secure OpenVPN server installer for Debian, Ubuntu, CentOS, Amazon Linux 2, Fedora and Arch Linux
 # https://github.com/angristan/openvpn-install