diff --git a/aiohttp/connector.py b/aiohttp/connector.py
index 5bb2d7c771..160eb3b34c 100644
--- a/aiohttp/connector.py
+++ b/aiohttp/connector.py
@@ -1174,7 +1174,9 @@ def drop_exception(fut: "asyncio.Future[List[Dict[str, Any]]]") -> None:
             host = hinfo["host"]
             port = hinfo["port"]
 
-            server_hostname = (req.server_hostname or hinfo["hostname"]) if sslcontext else None
+            server_hostname = (
+                (req.server_hostname or hinfo["hostname"]) if sslcontext else None
+            )
 
             try:
                 transp, proto = await self._wrap_create_connection(