diff --git a/fastapi/_compat.py b/fastapi/_compat.py
index d96cb4c28..3a9a6fb79 100644
--- a/fastapi/_compat.py
+++ b/fastapi/_compat.py
@@ -262,7 +262,10 @@ if PYDANTIC_V2:
     def create_body_model(
         *, fields: Sequence[ModelField], model_name: str
     ) -> Type[BaseModel]:
-        field_params = {f"{f.field_info.alias}": (f.field_info.annotation, f.field_info) for f in fields}
+        field_params = {
+            f"{f.field_info.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
 
diff --git a/tests/test_alias_in_form.py b/tests/test_alias_in_form.py
index daa657cc4..e8a11b6c7 100644
--- a/tests/test_alias_in_form.py
+++ b/tests/test_alias_in_form.py
@@ -6,14 +6,17 @@ app: FastAPI = FastAPI()
 
 @app.post("/testing_alias")
 async def check_alias(id_test: int = Form(alias="otherId")):
-    return {"other_id":id_test}
+    return {"other_id": id_test}
+
 
 @app.patch("/testing")
-async def check_without_alias(id_test:int = Form()):
-    return {"id_test":id_test}
+async def check_without_alias(id_test: int = Form()):
+    return {"id_test": id_test}
+
 
 client = TestClient(app)
 
+
 def test_without_alias():
     response = client.patch("/testing", data={"id_test": 1})
     assert response.status_code == 200
@@ -23,4 +26,4 @@ def test_without_alias():
 def test_get_alias():
     response = client.post("/testing_alias", data={"otherId": "1"})
     assert response.status_code == 200
-    assert response.json() == {"other_id": 1}
\ No newline at end of file
+    assert response.json() == {"other_id": 1}