diff --git a/oscarapi/serializers/admin/order.py b/oscarapi/serializers/admin/order.py
index 89e5d3b5..bc4438fe 100644
--- a/oscarapi/serializers/admin/order.py
+++ b/oscarapi/serializers/admin/order.py
@@ -22,6 +22,4 @@ class AdminOrderLineAttributeSerializer(OrderLineAttributeSerializer):
 
 class AdminOrderLineSerializer(OrderLineSerializer):
     url = serializers.HyperlinkedIdentityField(view_name="admin-order-lines-detail")
-    attributes = AdminOrderLineAttributeSerializer(
-        many=True, fields=("url", "option", "value"), required=False
-    )
+    attributes = AdminOrderLineAttributeSerializer(many=True, required=False)
diff --git a/oscarapi/serializers/checkout.py b/oscarapi/serializers/checkout.py
index 3b4f6280..59cf9273 100644
--- a/oscarapi/serializers/checkout.py
+++ b/oscarapi/serializers/checkout.py
@@ -118,16 +118,14 @@ class OrderLineAttributeSerializer(OscarHyperlinkedModelSerializer):
 
     class Meta:
         model = OrderLineAttribute
-        fields = "__all__"
+        fields = ["url", "option", "value"]
 
 
 class OrderLineSerializer(OscarHyperlinkedModelSerializer):
     "This serializer renames some fields so they match up with the basket"
 
     url = serializers.HyperlinkedIdentityField(view_name="order-lines-detail")
-    attributes = OrderLineAttributeSerializer(
-        many=True, fields=("url", "option", "value"), required=False
-    )
+    attributes = OrderLineAttributeSerializer(many=True, required=False)
     price_currency = serializers.CharField(source="order.currency", max_length=12)
     price_excl_tax = serializers.DecimalField(
         decimal_places=2, max_digits=12, source="line_price_excl_tax"