diff --git a/doc/plugins/recentchanges/discussion.mdwn b/doc/plugins/recentchanges/discussion.mdwn
index b563a8d9d..69145435e 100644
--- a/doc/plugins/recentchanges/discussion.mdwn
+++ b/doc/plugins/recentchanges/discussion.mdwn
@@ -5,4 +5,8 @@ The links to user pages of e.g. *MichaelBanck* or *GianlucaGuida* don't work, as
 being linked to <http://www.bddebian.com/~wiki/user/MichaelBanck>, whereas it should be
 <http://www.bddebian.com/~wiki/user/michaelbanck>.
 
+Another one.  If you change the *recentchangespage* configuration option, (it seems to me)
+that the pages from the old hierarchy will not be removed from the disk.  But then, changing
+this should be a rather uncommon thing.
+
 --[[tschwinge]]