diff --git a/netbox/dcim/api/serializers_/devices.py b/netbox/dcim/api/serializers_/devices.py
index eb6c4f9bc..1ad51caaa 100644
--- a/netbox/dcim/api/serializers_/devices.py
+++ b/netbox/dcim/api/serializers_/devices.py
@@ -170,8 +170,8 @@ class MACAddressSerializer(NetBoxModelSerializer):
     class Meta:
         model = MACAddress
         fields = [
-            'id', 'url', 'display_url', 'display', 'mac_address', 'assigned_object_type', 'assigned_object',
-            'description', 'comments',
+            'id', 'url', 'display_url', 'display', 'mac_address', 'assigned_object_type', 'assigned_object_id',
+            'assigned_object', 'description', 'comments',
         ]
         brief_fields = ('id', 'url', 'display', 'mac_address', 'description')