diff --git a/apps/dav/lib/caldav/caldavbackend.php b/apps/dav/lib/caldav/caldavbackend.php
index cd41fd1f044cc7ca1296f03fbd55ca73d276dc11..6dd60c4333637bb3304392e9da247f99b1d7da03 100644
--- a/apps/dav/lib/caldav/caldavbackend.php
+++ b/apps/dav/lib/caldav/caldavbackend.php
@@ -902,7 +902,7 @@ class CalDavBackend extends AbstractBackend implements SyncSupport, Subscription
 			])
 			->execute();
 
-		return $this->db->lastInsertId();
+		return $this->db->lastInsertId('*PREFIX*calendarsubscriptions');
 	}
 
 	/**