diff --git a/gunicorn/workers/async.py b/gunicorn/workers/async.py
index 5c8db918..d823d5d7 100644
--- a/gunicorn/workers/async.py
+++ b/gunicorn/workers/async.py
@@ -123,7 +123,7 @@ class AsyncWorker(base.Worker):
             raise
         except socket.error:
             # If the original exception was a socket.error we delegate
-            # handling it to the caller (where handle() might ignore it 
+            # handling it to the caller (where handle() might ignore it)
             six.reraise(*sys.exc_info())
         except Exception:
             if resp and resp.headers_sent: