diff --git a/group/tf-l1-build-plat/rk3399-default:nil b/group/tf-l1-build-plat/rk3399-default:nil
index 42894f4..03ca87c 100644
--- a/group/tf-l1-build-plat/rk3399-default:nil
+++ b/group/tf-l1-build-plat/rk3399-default:nil
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2019, Arm Limited. All rights reserved.
 #