diff --git a/user_manual/groupware/calendar.rst b/user_manual/groupware/calendar.rst
index d41b5ae1b..3b01f50fd 100644
--- a/user_manual/groupware/calendar.rst
+++ b/user_manual/groupware/calendar.rst
@@ -60,7 +60,7 @@ instance, importing is the best way to do so.
           ``.ics``-files, defined in RFC 5545.
 
 Import an Event/Add .ics Event
-~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 In many places, you can download event details as an .ics file, or via a button saying "ical", "Apple Calendar" or "Outlook".