diff --git a/gen_callouts.pl b/gen_callouts.pl
index b23a8bb..01f93c0 100755
--- a/gen_callouts.pl
+++ b/gen_callouts.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 use strict;
 use warnings;