diff --git a/fastapi/routing.py b/fastapi/routing.py
index 4c1901b29..7080d044c 100644
--- a/fastapi/routing.py
+++ b/fastapi/routing.py
@@ -397,9 +397,7 @@ def get_request_handler(
                 raw_response.background = solved_result.background_tasks
             return raw_response
 
-        response_args: Dict[str, Any] = {
-            "background": solved_result.background_tasks
-        }
+        response_args: Dict[str, Any] = {"background": solved_result.background_tasks}
         # If status_code was set, use it, otherwise use the default from the
         # response class, in the case of redirect it's 307
         if solved_result.response.status_code: