diff --git a/debian/helper-script/mimikatz b/debian/helper-script/mimikatz
index 3662da3..d761203 100755
--- a/debian/helper-script/mimikatz
+++ b/debian/helper-script/mimikatz
@@ -1,3 +1,5 @@
-#!/bin/sh
+#!/usr/bin/env sh
+
+set -e
 
 kali-treecd "/usr/share/windows-resources/mimikatz" "mimikatz" 2 false