diff --git a/Doc/library/asyncio-task.rst b/Doc/library/asyncio-task.rst
index e9b45cd2967..0ba6e84dab5 100644
--- a/Doc/library/asyncio-task.rst
+++ b/Doc/library/asyncio-task.rst
@@ -158,7 +158,7 @@ other coroutines::
         # Nothing happens if we just call "nested()".
         # A coroutine object is created but not awaited,
         # so it *won't run at all*.
-        nested()
+        nested()  # will raise a "RuntimeWarning".
 
         # Let's do it differently now and await it:
         print(await nested())  # will print "42".