diff --git a/mkdep b/mkdep
index 93753c1..1042840 100755
--- a/mkdep
+++ b/mkdep
@@ -1,4 +1,4 @@
-#!/bin/bash -
+#!/bin/sh -
 #
 #	$OpenBSD: mkdep.gcc.sh,v 1.8 1998/09/02 06:40:07 deraadt Exp $
 #	$NetBSD: mkdep.gcc.sh,v 1.9 1994/12/23 07:34:59 jtc Exp $