diff --git a/calendar/inc/class.calendar_bo.inc.php b/calendar/inc/class.calendar_bo.inc.php
index f0a7f246bb..e827ff6132 100644
--- a/calendar/inc/class.calendar_bo.inc.php
+++ b/calendar/inc/class.calendar_bo.inc.php
@@ -1180,10 +1180,10 @@ class calendar_bo
 			$access = $user == $owner || $grant & $needed
 				&& ($needed == EGW_ACL_FREEBUSY || !$private || $grant & EGW_ACL_PRIVATE);
 		}
-		// do NOT allow users to purge deleted events, if we dont have 'user_purge' enabled
+		// do NOT allow users to purge deleted events, if we dont have 'userpurge' enabled
 		if ($access && $needed == EGW_ACL_DELETE && $event['deleted'] &&
 			!$GLOBALS['egw_info']['user']['apps']['admin'] && $user != $this->user &&
-			$GLOBALS['egw_info']['server']['calendar_delete_history'] != 'user_purge')
+			$GLOBALS['egw_info']['server']['calendar_delete_history'] != 'userpurge')
 		{
 			$access = false;
 		}
diff --git a/calendar/templates/default/config.tpl b/calendar/templates/default/config.tpl
index c90ae3c133..7dd8a491a2 100644
--- a/calendar/templates/default/config.tpl
+++ b/calendar/templates/default/config.tpl
@@ -83,7 +83,7 @@
      <select name="newsettings[calendar_delete_history]">
       <option value="">{lang_No}</option>
       <option value="history"{selected_calendar_delete_history_history}>{lang_Yes,_only_admins_can_purge_deleted_items}</option>
-      <option value="user_purge"{selected_calendar_delete_history_user_purge}>{lang_Yes,_users_can_purge_their_deleted_items}</option>
+      <option value="userpurge"{selected_calendar_delete_history_userpurge}>{lang_Yes,_users_can_purge_their_deleted_items}</option>
      </select>
     </td>
    </tr>