diff --git a/target/linux/zynq/image/gen_zynq_sdcard_img.sh b/target/linux/zynq/image/gen_zynq_sdcard_img.sh
index 460a336e69..9afe18713e 100755
--- a/target/linux/zynq/image/gen_zynq_sdcard_img.sh
+++ b/target/linux/zynq/image/gen_zynq_sdcard_img.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
 
 set -ex
 [ $# -eq 5 ] || {