diff --git a/src/CrudBuilder.php b/src/CrudBuilder.php
index 0dff59a..03bbbca 100644
--- a/src/CrudBuilder.php
+++ b/src/CrudBuilder.php
@@ -12,7 +12,7 @@
  * @subpackage class
  * @access protected
  */
-class CrudBuilder
+abstract class CrudBuilder
 {
     use DatalayerTrait;