diff --git a/dal/TaskGateway.php b/dal/TaskGateway.php
index ab1957a..b1e4249 100644
--- a/dal/TaskGateway.php
+++ b/dal/TaskGateway.php
@@ -45,7 +45,8 @@ class TaskGateway
             if($table == 'task'){
                 $query='DELETE FROM Tache WHERE id = :id';
             } else {
-                $query='DELETE FROM uList WHERE id = :id';
+                $query='DELETE FROM uList WHERE id = :id;
+                        DELETE FROM Tache WHERE idList = :id;';
             }
             $this->con->executeQuery($query, array(
             ':id'=>array($id,PDO::PARAM_STR)));