diff --git a/Doc/library/exceptions.rst b/Doc/library/exceptions.rst
index ba6122e29bc..5a7193393cc 100644
--- a/Doc/library/exceptions.rst
+++ b/Doc/library/exceptions.rst
@@ -288,7 +288,7 @@ The following exceptions are the exceptions that are usually raised.
 
    .. versionchanged:: 3.3
       :exc:`EnvironmentError`, :exc:`IOError`, :exc:`WindowsError`,
-      :exc:`VMSError`, :exc:`socket.error`, :exc:`select.error` and
+      :exc:`socket.error`, :exc:`select.error` and
       :exc:`mmap.error` have been merged into :exc:`OSError`, and the
       constructor may return a subclass.
 
diff --git a/Doc/library/unittest.mock.rst b/Doc/library/unittest.mock.rst
index c4dc4ed5663..2073f0f3bb3 100644
--- a/Doc/library/unittest.mock.rst
+++ b/Doc/library/unittest.mock.rst
@@ -1725,7 +1725,7 @@ Methods and their defaults:
 * ``__ge__``: NotImplemented
 * ``__int__``: 1
 * ``__contains__``: False
-* ``__len__``: 1
+* ``__len__``: 0
 * ``__iter__``: iter([])
 * ``__exit__``: False
 * ``__complex__``: 1j