diff --git a/Doc/library/curses.rst b/Doc/library/curses.rst
index d6a35c3..ff3a793 100644
--- a/Doc/library/curses.rst
+++ b/Doc/library/curses.rst
@@ -653,7 +653,7 @@
 --------------
 
 Window objects, as returned by :func:`initscr` and :func:`newwin` above, have
-the following methods:
+the following methods and attributes:
 
 
 .. method:: window.addch([y, x,] ch[, attr])
@@ -834,6 +834,16 @@
    event.
 
 
+.. attribute:: window.encoding
+
+   Encoding used to encode method arguments (Unicode strings and characters).
+   The encoding attribute is inherited from by parent window when a subwindow
+   is created, for example with :meth:`window.subwin`. By default, the locale
+   encoding is used (see :func:`locale.getpreferredencoding`).
+
+   .. versionadded:: 3.3
+
+
 .. method:: window.erase()
 
    Clear the window.