diff --git a/Lib/test/test_asyncio/test_streams.py b/Lib/test/test_asyncio/test_streams.py
index 1f375f06934..6f657ad5f80 100644
--- a/Lib/test/test_asyncio/test_streams.py
+++ b/Lib/test/test_asyncio/test_streams.py
@@ -653,7 +653,7 @@ def server():
             q.put(addr)
             clt, _ = sock.accept()
             clt.close()
-        
+
         @asyncio.coroutine
         def client(host, port):
             reader, writer = yield from asyncio.open_connection(host, port, loop=self.loop)