diff --git a/doc/api/resources/checkinlists.rst b/doc/api/resources/checkinlists.rst
index fd2c01b0f5..e499f3780c 100644
--- a/doc/api/resources/checkinlists.rst
+++ b/doc/api/resources/checkinlists.rst
@@ -494,8 +494,6 @@ Order position endpoints
    * If ``attendee_name`` is empty, it will automatically fall back to values from a parent product or from invoice
      addresses.
 
-   **Instead of an ID, you can also use the ``secret`` field as the lookup parameter.**
-
    **Example request**:
 
    .. sourcecode:: http
@@ -569,7 +567,7 @@ Order position endpoints
    Tries to redeem an order position, identified by its internal ID, i.e. checks the attendee in. This endpoint
    accepts a number of optional requests in the body.
 
-   **Instead of an ID, you can also use the ``secret`` field as the lookup parameter.**
+   **Tip:** Instead of an ID, you can also use the ``secret`` field as the lookup parameter.
 
    :<json boolean questions_supported: When this parameter is set to ``true``, handling of questions is supported. If
                                        you do not implement question handling in your user interface, you **must**
diff --git a/src/pretix/api/views/order.py b/src/pretix/api/views/order.py
index 9ce5ac3dd8..fb743024a4 100644
--- a/src/pretix/api/views/order.py
+++ b/src/pretix/api/views/order.py
@@ -106,7 +106,7 @@ with scopes_disabled():
                             Q(date_to__gt=value) | Q(date_from__gt=value, date_to__isnull=True),
                             event=self.request.event
                         ).values_list('id'),
-                    ).values_list('id')
+                    ).values_list('order_id')
                 )
             )
             return qs
@@ -119,7 +119,7 @@ with scopes_disabled():
                             Q(date_from__lt=value),
                             event=self.request.event
                         ).values_list('id'),
-                    ).values_list('id')
+                    ).values_list('order_id')
                 )
             )
             return qs