diff --git a/application/models/crm/Dokumentprestudent_model.php b/application/models/crm/Dokumentprestudent_model.php
index ab4764479..0a6669359 100644
--- a/application/models/crm/Dokumentprestudent_model.php
+++ b/application/models/crm/Dokumentprestudent_model.php
@@ -10,6 +10,7 @@ class Dokumentprestudent_model extends DB_Model
 		parent::__construct();
 		$this->dbTable = 'public.tbl_dokumentprestudent';
 		$this->pk = array('prestudent_id', 'dokument_kurzbz');
+		$this->hasSequence = false;
 	}
 
 	/**