diff --git a/docs_src/extending_openapi/tutorial002.py b/docs_src/extending_openapi/tutorial002.py
index f7e132636..cb0fa27f5 100644
--- a/docs_src/extending_openapi/tutorial002.py
+++ b/docs_src/extending_openapi/tutorial002.py
@@ -1,8 +1,8 @@
 from fastapi import FastAPI
 from fastapi.openapi.docs import (
     get_redoc_html,
-    get_swagger_ui_html,
     get_stoplight_elements_html,
+    get_swagger_ui_html,
     get_swagger_ui_oauth2_redirect_html,
 )
 from fastapi.staticfiles import StaticFiles
@@ -36,6 +36,7 @@ async def redoc_html():
         redoc_js_url="/static/redoc.standalone.js",
     )
 
+
 @app.get("/elements", include_in_schema=False)
 async def elements_html():
     return get_stoplight_elements_html(
@@ -48,4 +49,4 @@ async def elements_html():
 
 @app.get("/users/{username}")
 async def read_user(username: str):
-    return {"message": f"Hello {username}"}
\ No newline at end of file
+    return {"message": f"Hello {username}"}