diff --git a/doc/ikiwiki-calendar.mdwn b/doc/ikiwiki-calendar.mdwn
index 3f5c6a29e..982892fca 100644
--- a/doc/ikiwiki-calendar.mdwn
+++ b/doc/ikiwiki-calendar.mdwn
@@ -28,7 +28,7 @@ Specify a second year to create pages for a span of years.
 Existing pages will not be overwritten by this command by default.
 Use the `-f` switch to force it to overwrite any existing pages.
 
-## CRONTAB
+# CRONTAB
 
 While this command only needs to be run once a year to update
 the archive pages for each new year, you are recommended to set up