diff --git a/model/css-rdn1edge.sh b/model/css-rdn1edge.sh
index 3c994ee..d8879ae 100644
--- a/model/css-rdn1edge.sh
+++ b/model/css-rdn1edge.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2019, Arm Limited. All rights reserved.
 #