diff --git a/bin/togglescreen b/bin/togglescreen
index f545992..55fc206 100755
--- a/bin/togglescreen
+++ b/bin/togglescreen
@@ -1,4 +1,5 @@
-#!/bin/sh -e
+#!/usr/bin/env sh
+set -e
 
 screen_is_on() {
     [ "$(brightnessctl g)" -ne 0 ]