diff --git a/target/linux/brcm2708/image/gen_rpi_sdcard_img.sh b/target/linux/brcm2708/image/gen_rpi_sdcard_img.sh
index 60b66c37247..5e8fb2769c4 100755
--- a/target/linux/brcm2708/image/gen_rpi_sdcard_img.sh
+++ b/target/linux/brcm2708/image/gen_rpi_sdcard_img.sh
@@ -1,6 +1,6 @@
-#!/usr/bin/env bash
+#!/bin/sh
 
-set -x 
+set -x
 [ $# -eq 5 ] || {
     echo "SYNTAX: $0 <file> <bootfs image> <rootfs image> <bootfs size> <rootfs size>"
     exit 1