diff --git a/gen-ula.sh b/gen-ula.sh
index 05efbc0..e2f428f 100644
--- a/gen-ula.sh
+++ b/gen-ula.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # ULA Generator
 # Alexandre de Verteuil <adeverteuil@inap.com>