diff --git a/addressbook/inc/class.addressbook_merge.inc.php b/addressbook/inc/class.addressbook_merge.inc.php
index 2d615a2d6b..89592ae7e5 100644
--- a/addressbook/inc/class.addressbook_merge.inc.php
+++ b/addressbook/inc/class.addressbook_merge.inc.php
@@ -130,8 +130,8 @@ class addressbook_merge	// extends bo_merge
 	 */
 	function calendar_replacements($id,$last_event_too=false)
 	{
-		require_once(EGW_INCLUDE_ROOT.'/calendar/inc/class.bocalupdate.inc.php');
-		$calendar =& new bocalupdate();
+		require_once(EGW_INCLUDE_ROOT.'/calendar/inc/class.calendar_boupdate.inc.php');
+		$calendar =& new calendar_boupdate();
 
 		// next events
 		$events = $calendar->search(array(
@@ -360,4 +360,4 @@ class addressbook_merge	// extends bo_merge
 
 		$GLOBALS['egw']->common->egw_footer();
 	}
-}
\ No newline at end of file
+}