Make compilation on DragonFly work
diff --git a/tests/scripts/generate_code.pl b/tests/scripts/generate_code.pl
index 75d741d..c53e8aa 100755
--- a/tests/scripts/generate_code.pl
+++ b/tests/scripts/generate_code.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 
 use strict;