diff --git a/conf/backend/config-caldav.php b/conf/backend/config-caldav.php
index 3592934..6e6bc2b 100644
--- a/conf/backend/config-caldav.php
+++ b/conf/backend/config-caldav.php
@@ -61,7 +61,7 @@ define('CALDAV_PERSONAL', 'default');
 // DAViCal, SOGo and SabreDav support it
 // SabreDav version must be at least 1.9.0, otherwise set this to false
 // Setting this to false will work with most servers, but it will be slower
-define('CALDAV_SUPPORTS_SYNC', false);
+define('CALDAV_SUPPORTS_SYNC', true);
 
 
 ?>