diff --git a/target/linux/rb532-2.6/base-files/default/etc/diag.sh b/target/linux/rb532-2.6/base-files/default/etc/diag.sh
new file mode 100644
index 0000000000..d8f9a88257
--- /dev/null
+++ b/target/linux/rb532-2.6/base-files/default/etc/diag.sh
@@ -0,0 +1,19 @@
+#!/bin/sh
+# Copyright (C) 2007 OpenWrt.org
+
+set_led() {
+	local led="$1"
+	local state="$2"
+	[ -d "/sys/class/leds/rb500led:$led" ] && echo "$state" > "/sys/class/leds/rb500led:$led/brightness"
+}
+
+set_state() {
+	case "$1" in
+		preinit)
+			set_led amber 1
+		;;
+		done)
+			set_led amber 0
+		;;
+	esac
+}