diff --git a/Lib/asyncio/unix_events.py b/Lib/asyncio/unix_events.py
index 535ea22..764e719 100644
--- a/Lib/asyncio/unix_events.py
+++ b/Lib/asyncio/unix_events.py
@@ -269,6 +269,7 @@
         self._loop.add_reader(self._fileno, self._read_ready)
         self._loop.call_soon(self._protocol.connection_made, self)
         if waiter is not None:
+            # wait until protocol.connection_made() has been called
             self._loop.call_soon(waiter._set_result_unless_cancelled, None)
 
     def _read_ready(self):
@@ -353,6 +354,7 @@
 
         self._loop.call_soon(self._protocol.connection_made, self)
         if waiter is not None:
+            # wait until protocol.connection_made() has been called
             self._loop.call_soon(waiter._set_result_unless_cancelled, None)
 
     def get_write_buffer_size(self):