diff -up Devel-PPPort-3.68/mktests.PL.orig Devel-PPPort-3.68/mktests.PL
--- Devel-PPPort-3.68/mktests.PL.orig	2023-05-16 15:15:42.357643361 +0200
+++ Devel-PPPort-3.68/mktests.PL	2023-05-16 15:16:04.441822241 +0200
@@ -60,6 +60,7 @@ sub generate_tests
 }
 
 __DATA__
+#!/usr/bin/perl
 ################################################################################
 #
 #            !!!!!   Do NOT edit this file directly!   !!!!!