diff --git a/requests/adapters.py b/requests/adapters.py
index 7ea25fd8..8193f84d 100644
--- a/requests/adapters.py
+++ b/requests/adapters.py
@@ -408,7 +408,6 @@ class HTTPAdapter(BaseAdapter):
 
         chunked = not (request.body is None or 'Content-Length' in request.headers)
 
-        
         if isinstance(timeout, tuple):
             try:
                 connect, read = timeout