diff --git a/Doc/library/codecs.rst b/Doc/library/codecs.rst
index b7bd125..e3f98ef 100644
--- a/Doc/library/codecs.rst
+++ b/Doc/library/codecs.rst
@@ -322,7 +322,7 @@
 | ``'backslashreplace'``  | Replace with backslashed escape sequences     |
 |                         | (only for encoding).                          |
 +-------------------------+-----------------------------------------------+
-| ``'utf8b'``             | Replace byte with surrogate U+DCxx.           |
+| ``'surrogateescape'``   | Replace byte with surrogate U+DCxx.           |
 +-------------------------+-----------------------------------------------+
 
 In addition, the following error handlers are specific to a single codec:
@@ -335,7 +335,7 @@
 +-------------------+---------+-------------------------------------------+
 
 .. versionadded:: 3.1
-   The ``'utf8b'`` and ``'surrogatepass'`` error handlers.
+   The ``'surrogateescape'`` and ``'surrogatepass'`` error handlers.
 
 The set of allowed values can be extended via :meth:`register_error`.
 
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 83f5ee9..2213740 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -64,8 +64,8 @@
 
 .. versionchanged:: 3.1
    On some systems, conversion using the file system encoding may
-   fail. In this case, Python uses the ``utf8b`` encoding error
-   handler, which means that undecodable bytes are replaced by a
+   fail. In this case, Python uses the ``surrogateescape`` encoding
+   error handler, which means that undecodable bytes are replaced by a
    Unicode character U+DCxx on decoding, and these are again
    translated to the original byte on encoding.