diff --git a/etc/X11/Xsession.d/50security-misc b/etc/X11/Xsession.d/50security-misc
index c9ffae8..31d77c0 100755
--- a/etc/X11/Xsession.d/50security-misc
+++ b/etc/X11/Xsession.d/50security-misc
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 ## Copyright (C) 2012 - 2020 ENCRYPTED SUPPORT LP <adrelanos@riseup.net>
 ## See the file COPYING for copying conditions.