diff --git a/django_forms_as_jsonschema/layout.py b/django_forms_as_jsonschema/layout.py
index 7f3e2cf24e361d83b3c81f03d283afdf36feb359..ecfdc9e2497598138a403c13f3f5ad11327041d0 100644
--- a/django_forms_as_jsonschema/layout.py
+++ b/django_forms_as_jsonschema/layout.py
@@ -15,6 +15,7 @@ from django.utils.text import slugify
 
 class LayoutNode(ABC):
     """Abstract node in a form layout."""
+
     def __init__(self, *elements):
         self.elements = elements
 
@@ -63,6 +64,7 @@ class Row(LayoutNode):
     def __init__(self, *elements):
         super().__init__(*elements)
         self.row_name = f"row-{id(self)}"
+
     def build_schema(self, schema, form_fields):
         """Render this row as a JSON schema fragment."""
         row_name = f"row-{id(self)}"
@@ -89,8 +91,10 @@ class Row(LayoutNode):
 
 class Fieldset(LayoutNode):
     """Visual set of fields in a form."""
+
     def __init__(self, name: Union[tuple[str, str], str], *elements):
         super().__init__(*elements)
+        # FIXME: name can be of __proxy__ type which can't be serialized
         codename = str(slugify(name))
 
         if isinstance(name, tuple):