diff --git a/backend/src/Squidex/Areas/Api/Controllers/Schemas/Models/FieldDto.cs b/backend/src/Squidex/Areas/Api/Controllers/Schemas/Models/FieldDto.cs
index d878b5cf1..f0657055f 100644
--- a/backend/src/Squidex/Areas/Api/Controllers/Schemas/Models/FieldDto.cs
+++ b/backend/src/Squidex/Areas/Api/Controllers/Schemas/Models/FieldDto.cs
@@ -69,6 +69,7 @@ namespace Squidex.Areas.Api.Controllers.Schemas.Models
                 SimpleMapper.Map(field,
                     new NestedFieldDto
                     {
+                        FieldId = field.Id,
                         Properties = properties
                     });