diff --git a/gosmee/templates/replay_script.tmpl.bash b/gosmee/templates/replay_script.tmpl.bash
index e070b78..8813b45 100755
--- a/gosmee/templates/replay_script.tmpl.bash
+++ b/gosmee/templates/replay_script.tmpl.bash
@@ -1,14 +1,20 @@
-#!/bin/bash
-#
+#!/usr/bin/env bash
+# Copyright 2023 Chmouel Boudjnah <chmouel@chmouel.com>
 # Replay script with headers and JSON payload to the target controller.
 #
-# You can switch the targetURL to another one with the -l switch, which defaults
-# to http://localhost:8080.
+# You can switch the targetURL with the first command line argument and you can
+# the -l switch, which defaults to http://localhost:8080.
+# Same goes for the variable GOSMEE_DEBUG_SERVICE.
 #
-# You can customze this target with the env variable: GOSMEE_DEBUG_SERVICE
-set -euxf
+set -euxfo pipefail
 cd $(dirname $(readlink -f $0))
 
-targetURL="{{ .TargetURL }}"
-[[ ${1:-""} == -l ]] && targetURL=${GOSMEE_DEBUG_SERVICE:-"http://localhost:8080"}
+if [[ ${1:-""} == -l ]]; then
+	targetURL="http://localhost:8080"
+elif [[ -n ${1:-""} ]]; then
+	targetURL=${1}
+elif [[ -n ${GOSMEE_DEBUG_SERVICE:-""} ]]; then
+	targetURL=${GOSMEE_DEBUG_SERVICE}
+fi
+
 curl -sSi -H "Content-Type: {{ .ContentType }}" {{ .Headers }} -X POST -d @./{{ .FileBase }}.json ${targetURL}