diff --git a/doc/plugins/po.mdwn b/doc/plugins/po.mdwn
index 6d468f07e..a2e7b18e3 100644
--- a/doc/plugins/po.mdwn
+++ b/doc/plugins/po.mdwn
@@ -298,6 +298,11 @@ If a given translatable `sourcepage.mdwn` links to \[[destpage]],
 `sourcepage.LL.po` also link to \[[destpage]], and the latter has the master
 page *and* all its translations listed in the backlinks.
 
+### license
+
+> Could you please put a copyright and license on po.pm? I assume it's
+> GPLed as it's based on po4a-translate. --[[Joey]]
+
 Translation quality assurance
 -----------------------------