diff --git a/Doc/library/unittest.mock.rst b/Doc/library/unittest.mock.rst
--- a/Doc/library/unittest.mock.rst
+++ b/Doc/library/unittest.mock.rst
@@ -1715,19 +1715,20 @@ For example:
    1
    >>> len(mock)
    0
    >>> list(mock)
    []
    >>> object() in mock
    False
 
-The two equality method, :meth:`__eq__` and :meth:`__ne__`, are special.
-They do the default equality comparison on identity, using a side
-effect, unless you change their return value to return something else:
+The two equality methods, :meth:`__eq__` and :meth:`__ne__`, are special.
+They do the default equality comparison on identity, using the
+:attr:`~Mock.side_effect` attribute, unless you change their return value to
+return something else::
 
    >>> MagicMock() == 3
    False
    >>> MagicMock() != 3
    True
    >>> mock = MagicMock()
    >>> mock.__eq__.return_value = True
    >>> mock == 3