diff --git a/target/linux/omap/image/gen_omap_sdcard_img.sh b/target/linux/omap/image/gen_omap_sdcard_img.sh
index 881df9a05d..dbb50cbff4 100755
--- a/target/linux/omap/image/gen_omap_sdcard_img.sh
+++ b/target/linux/omap/image/gen_omap_sdcard_img.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
 
 #
 # Copyright (C) 2013 OpenWrt.org