diff --git a/doc/ikiwiki.setup b/doc/ikiwiki.setup
index aa3b3c0ee..f61c582d8 100644
--- a/doc/ikiwiki.setup
+++ b/doc/ikiwiki.setup
@@ -94,7 +94,7 @@ use IkiWiki::Setup::Standard {
 	syslog => 0,
 	# To link to user pages in a subdirectory of the wiki.
 	#userdir => "users",
-	# To enable alternate output filenames.
+	# To create output files named page/index.html rather than page.html.
 	#usedirs => 1,
 
 	# To add plugins, list them here.