diff --git a/scripts/t-shirt-label-print.plx b/scripts/t-shirt-label-print.plx
index 1b5a6f4..dc07b91 100644
--- a/scripts/t-shirt-label-print.plx
+++ b/scripts/t-shirt-label-print.plx
@@ -1,4 +1,5 @@
 #!/usr/bin/perl
+# License: AGPL-3.0-or-later
 
 use strict;
 use warnings;