diff --git a/src/pretix/api/views/media.py b/src/pretix/api/views/media.py
index 8b16a44da7..3f71dea7db 100644
--- a/src/pretix/api/views/media.py
+++ b/src/pretix/api/views/media.py
@@ -157,7 +157,6 @@ class ReusableMediaViewSet(viewsets.ModelViewSet):
                         type=s.validated_data["type"],
                         identifier=s.validated_data["identifier"],
                     )
-                m.linked_orderpositions = None  # not relevant for cross-organizer
                 m.customer = None  # not relevant for cross-organizer
                 s = self.get_serializer(m)
                 return Response({"result": s.data})
diff --git a/src/tests/api/test_checkinrpc.py b/src/tests/api/test_checkinrpc.py
index 9fb79cfa67..8591837ef4 100644
--- a/src/tests/api/test_checkinrpc.py
+++ b/src/tests/api/test_checkinrpc.py
@@ -286,12 +286,12 @@ def test_by_secret_special_chars(token_client, organizer, clist, event, order):
 @pytest.mark.django_db
 def test_by_medium(token_client, organizer, clist, event, order):
     with scopes_disabled():
-        ReusableMedium.objects.create(
+        rm = ReusableMedium.objects.create(
             type="barcode",
             identifier="abcdef",
             organizer=organizer,
-            linked_orderposition=order.positions.first(),
         )
+        rm.linked_orderpositions.add(order.positions.first())
     resp = _redeem(token_client, organizer, clist, "abcdef", {"source_type": "barcode"})
     assert resp.status_code == 201
     assert resp.data['status'] == 'ok'
@@ -318,12 +318,13 @@ def test_by_medium_not_connected(token_client, organizer, clist, event, order):
 @pytest.mark.django_db
 def test_by_medium_wrong_event(token_client, organizer, clist, event, order2):
     with scopes_disabled():
-        ReusableMedium.objects.create(
+        rm = ReusableMedium.objects.create(
             type="barcode",
             identifier="abcdef",
             organizer=organizer,
             linked_orderposition=order2.positions.first(),
         )
+        rm.linked_orderpositions.add(order2.positions.first())
     resp = _redeem(token_client, organizer, clist, "abcdef", {"source_type": "barcode"})
     assert resp.status_code == 404
     assert resp.data['status'] == 'error'
@@ -337,12 +338,12 @@ def test_by_medium_wrong_event(token_client, organizer, clist, event, order2):
 @pytest.mark.django_db
 def test_by_medium_wrong_type(token_client, organizer, clist, event, order):
     with scopes_disabled():
-        ReusableMedium.objects.create(
+        rm = ReusableMedium.objects.create(
             type="nfc_uid",
             identifier="abcdef",
             organizer=organizer,
-            linked_orderposition=order.positions.first(),
         )
+        rm.linked_orderpositions.add(order.positions.first())
     resp = _redeem(token_client, organizer, clist, "abcdef", {"source_type": "barcode"})
     assert resp.status_code == 404
     assert resp.data['status'] == 'error'
@@ -355,13 +356,13 @@ def test_by_medium_wrong_type(token_client, organizer, clist, event, order):
 @pytest.mark.django_db
 def test_by_medium_inactive(token_client, organizer, clist, event, order):
     with scopes_disabled():
-        ReusableMedium.objects.create(
+        rm = ReusableMedium.objects.create(
             type="barcode",
             identifier="abcdef",
             organizer=organizer,
             active=False,
-            linked_orderposition=order.positions.first(),
         )
+        rm.linked_orderpositions.add(order.positions.first())
     resp = _redeem(token_client, organizer, clist, "abcdef", {"source_type": "barcode"})
     assert resp.status_code == 404
     assert resp.data['status'] == 'error'
diff --git a/src/tests/api/test_order_create.py b/src/tests/api/test_order_create.py
index f3f1d7e3ef..50f1d04233 100644
--- a/src/tests/api/test_order_create.py
+++ b/src/tests/api/test_order_create.py
@@ -3086,7 +3086,7 @@ def test_order_create_use_medium(token_client, organizer, event, item, quota, qu
     with scopes_disabled():
         o = Order.objects.get(code=resp.data['code'])
         medium.refresh_from_db()
-        assert o.positions.first() == medium.linked_orderposition
+        assert o.positions.first() == medium.linked_orderpositions.first()
         assert resp.data['positions'][0]['pdf_data']['medium_identifier'] == medium.identifier
 
 
@@ -3133,7 +3133,7 @@ def test_order_create_create_medium(token_client, organizer, event, item, quota,
         i = resp.data['positions'][0]['pdf_data']['medium_identifier']
         assert i
         m = organizer.reusable_media.get(identifier=i)
-        assert m.linked_orderposition == o.positions.first()
+        assert m.linked_orderpositions.first() == o.positions.first()
         assert m.type == "barcode"
 
 
diff --git a/src/tests/api/test_reusable_media.py b/src/tests/api/test_reusable_media.py
index 2938e524a6..0b6ed4fe7e 100644
--- a/src/tests/api/test_reusable_media.py
+++ b/src/tests/api/test_reusable_media.py
@@ -92,7 +92,7 @@ TEST_MEDIUM_RES = {
     "active": True,
     "expires": None,
     "customer": None,
-    "linked_orderposition": None,
+    "linked_orderpositions": None,
     "linked_giftcard": None,
     "notes": None,
     "info": {},
@@ -138,7 +138,7 @@ def test_medium_detail(token_client, organizer, event, medium, giftcard, custome
         ticket = event.items.create(name='Early-bird ticket', category=None, default_price=23, admission=True,
                                     personalized=True)
         op = o.positions.create(item=ticket, price=Decimal("14"))
-        medium.linked_orderposition = op
+        medium.linked_orderpositions.add(op)
         medium.linked_giftcard = giftcard
         medium.customer = customer
         medium.save()
@@ -419,7 +419,7 @@ def test_medium_lookup_cross_organizer(token_client, organizer, organizer2, org2
         ticket = org2_event.items.create(name='Early-bird ticket', category=None, default_price=23, admission=True,
                                          personalized=True)
         op = o.positions.create(item=ticket, price=Decimal("14"))
-        medium2.linked_orderposition = op
+        medium2.linked_orderpositions.add(op)
         medium2.linked_giftcard = giftcard2
         medium2.save()