diff --git a/doc/install/discussion.mdwn b/doc/install/discussion.mdwn
index 52f5e075c..ebf873312 100644
--- a/doc/install/discussion.mdwn
+++ b/doc/install/discussion.mdwn
@@ -125,3 +125,6 @@ Are there other prerequisites?
 I also installed all optional Perl modules, except TimeDate.
 
 `make` exits with `make: *** [extra_build] Aborted`, `make test` complains `cannot stat 'ikiwiki.man'`
+
+> TimeDate is also, confusingly, known as Date::Parse. Perhaps CPAN would
+> do better with that name. --[[Joey]]