diff --git a/config/updateall/scripts/50-docker b/config/updateall/scripts/50-docker
index f5a9a7b..1073b83 100755
--- a/config/updateall/scripts/50-docker
+++ b/config/updateall/scripts/50-docker
@@ -1,4 +1,4 @@
-#!/bin/sh -x
+#!/usr/bin/env sh
 
 cd /opt/docker || exit