diff --git a/tests/test_stdin_socket.py b/tests/test_stdin_socket.py
index 7ad3c201..74db3261 100644
--- a/tests/test_stdin_socket.py
+++ b/tests/test_stdin_socket.py
@@ -18,7 +18,6 @@ def run_process(test_file):
     return 1
 
 
-@tornado.gen.coroutine
 def read_from_stream(stream, timeout=5):
     start = time.time()
     while time.time() - start < timeout:
@@ -26,7 +25,7 @@ def read_from_stream(stream, timeout=5):
             data = stream.get_nowait()
             raise tornado.gen.Return(data['data'].decode('utf-8'))
         except Empty:
-            yield tornado_sleep(.1)
+            yield from tornado_sleep(.1)
     raise TimeoutException('Timeout reading queue')