diff --git a/fastapi/_compat.py b/fastapi/_compat.py
index a335fc3ae..ad35d4560 100644
--- a/fastapi/_compat.py
+++ b/fastapi/_compat.py
@@ -282,7 +282,9 @@ if PYDANTIC_V2:
     def create_body_model(
         *, fields: Sequence[ModelField], model_name: str
     ) -> Type[BaseModel]:
-        field_params = {f.alias: (f.field_info.annotation, f.field_info) for f in fields}
+        field_params = {
+            f.alias: (f.field_info.annotation, f.field_info) for f in fields
+        }
         BodyModel: Type[BaseModel] = create_model(model_name, **field_params)  # type: ignore[call-overload]
         return BodyModel