diff --git a/tests/test_app_init.py b/tests/test_app_init.py
index 931b3d13c..261041818 100644
--- a/tests/test_app_init.py
+++ b/tests/test_app_init.py
@@ -1,4 +1,5 @@
 """Tests for initialization of FastAPI app instance."""
+
 import pytest
 
 from fastapi import FastAPI
@@ -9,11 +10,13 @@ def test_open_api_url_no_title():
     with pytest.raises(ValueError):
         FastAPI(openapi_url="/openapi.json", title=None)
 
+
 def test_open_api_url_no_version():
     """An error should be raised if an openapi URL is provided without a version."""
     with pytest.raises(ValueError):
         FastAPI(openapi_url="/openapi.json", version=None)
 
+
 def test_open_api_url_title_and_version():
     """No error should be raised if an openapi URL is provided with a title and version."""
-    FastAPI(openapi_url="/openapi.json", title="Title", version="0.1")
\ No newline at end of file
+    FastAPI(openapi_url="/openapi.json", title="Title", version="0.1")