diff --git a/Lib/asyncio/tasks.py b/Lib/asyncio/tasks.py
index 36404687a57..ec04d2f6fa5 100644
--- a/Lib/asyncio/tasks.py
+++ b/Lib/asyncio/tasks.py
@@ -32,9 +32,7 @@ _DEBUG = False
 
 
 class CoroWrapper:
-    """Wrapper for coroutine in _DEBUG mode."""
-
-    __slots__ = ['gen', 'func']
+    __slots__ = ['gen', 'func', '__name__', '__doc__']
 
     def __init__(self, gen, func):
         assert inspect.isgenerator(gen), gen