diff --git a/user_manual/groupware/calendar.rst b/user_manual/groupware/calendar.rst
index aa5890699..368684e84 100644
--- a/user_manual/groupware/calendar.rst
+++ b/user_manual/groupware/calendar.rst
@@ -174,7 +174,7 @@ check and concretize the time span or set the event as an all-day event. Optiona
 you can specify a location and a description.
 
 If you want to edit advanced details such as the **Attendees** or **Reminders**, or if you
-want to set the event as a repeating-event, click on the ``More`` button to open the advanced editor.
+want to set the event as a repeating event, click on the ``More`` button to open the advanced editor.
 
 .. note:: If you always want to open the advanced editor instead of the
           simple event editor popup, you uncheck the option