#6112: list.remove raises ValueError, not RuntimeError.
diff --git a/Doc/library/sched.rst b/Doc/library/sched.rst
index 2283077..51b9d3f 100644
--- a/Doc/library/sched.rst
+++ b/Doc/library/sched.rst
@@ -100,7 +100,7 @@
.. method:: scheduler.cancel(event)
Remove the event from the queue. If *event* is not an event currently in the
- queue, this method will raise a :exc:`RuntimeError`.
+ queue, this method will raise a :exc:`ValueError`.
.. method:: scheduler.empty()
diff --git a/Lib/sched.py b/Lib/sched.py
index aecdb2a..f0da829 100644
--- a/Lib/sched.py
+++ b/Lib/sched.py
@@ -67,7 +67,7 @@
"""Remove an event from the queue.
This must be presented the ID as returned by enter().
- If the event is not in the queue, this raises RuntimeError.
+ If the event is not in the queue, this raises ValueError.
"""
self._queue.remove(event)