diff --git a/Models/NullExpenseElement.php b/Models/NullExpenseElement.php
index 911e14d..ed26fbd 100644
--- a/Models/NullExpenseElement.php
+++ b/Models/NullExpenseElement.php
@@ -34,6 +34,7 @@ final class NullExpenseElement extends ExpenseElement
     public function __construct(int $id = 0)
     {
         $this->id = $id;
+        parent::__construct();
     }
 
     /**