diff --git a/src/Controller/Administrative/Assignment/IndexController.php b/src/Controller/Administrative/Assignment/IndexController.php
index 53e03e2..118449c 100644
--- a/src/Controller/Administrative/Assignment/IndexController.php
+++ b/src/Controller/Administrative/Assignment/IndexController.php
@@ -36,7 +36,7 @@ class IndexController extends AbstractController
             $request->query->getInt('page', 1),
             $request->query->getInt('limit', 10),
             [
-                'defaultSortFieldName' => 'destination.dateFrom',
+                'defaultSortFieldName' => ['destination.dateFrom', 'assignment.id'],
                 'defaultSortDirection' => 'asc',
             ]
         );
diff --git a/templates/administrative/assignment/index.html.twig b/templates/administrative/assignment/index.html.twig
index fb3001c..30e260a 100644
--- a/templates/administrative/assignment/index.html.twig
+++ b/templates/administrative/assignment/index.html.twig
@@ -35,13 +35,13 @@
                 <thead>
                 <tr>
                     <th>
-                        ID
+                        {{ knp_pagination_sortable(pagination, 'ID', ['assignment.id']) }}
                     </th>
                     <th>
                         Status
                     </th>
                     <th>
-                        {{ knp_pagination_sortable(pagination, 'Einsatz&shy;zeitraum', 'destination.dateFrom') }}
+                        {{ knp_pagination_sortable(pagination, 'Einsatz&shy;zeitraum', ['destination.dateFrom', 'assignment.id']) }}
                     </th>
                     <th>
                         {{ knp_pagination_sortable(pagination, 'Destination', 'destination.product') }}