Index: tests/keytest1.tcl
==================================================================
--- tests/keytest1.tcl
+++ tests/keytest1.tcl
@@ -1,6 +1,8 @@
-#!/usr/bin/env tclsh
+#!/bin/sh
+# The next line is executed by /bin/sh, but not tcl \
+exec tclsh "$0" ${1+"$@"}
 
 set auto_path [linsert $auto_path 0 [file normalize [file join [file dirname [info script]] ..]]]
 package require tls
 
 proc creadable {s} {

Index: tests/keytest2.tcl
==================================================================
--- tests/keytest2.tcl
+++ tests/keytest2.tcl
@@ -1,6 +1,8 @@
-#! /usr/bin/env tclsh
+#!/bin/sh
+# The next line is executed by /bin/sh, but not tcl \
+exec tclsh "$0" ${1+"$@"}
 
 set auto_path [linsert $auto_path 0 [file normalize [file join [file dirname [info script]] ..]]]
 package require tls
 
 set s [tls::socket 127.0.0.1 12300]

Index: tests/simpleClient.tcl
==================================================================
--- tests/simpleClient.tcl
+++ tests/simpleClient.tcl
@@ -1,6 +1,8 @@
-#!/usr/bin/env tclsh
+#!/bin/sh
+# The next line is executed by /bin/sh, but not tcl \
+exec tclsh "$0" ${1+"$@"}
 
 package require tls
 
 set dir			[file join [file dirname [info script]] ../tests/certs]
 set OPTS(-cafile)	[file join $dir ca.pem]

Index: tests/simpleServer.tcl
==================================================================
--- tests/simpleServer.tcl
+++ tests/simpleServer.tcl
@@ -1,6 +1,8 @@
-#!/usr/bin/env tclsh
+#!/bin/sh
+# The next line is executed by /bin/sh, but not tcl \
+exec tclsh "$0" ${1+"$@"}
 
 package require tls
 
 set dir			[file join [file dirname [info script]] ../tests/certs]
 set OPTS(-cafile)	[file join $dir ca.pem]