diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index a0dfc4cd359..26ff30988e7 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -2008,7 +2008,7 @@ expression support in the :mod:`re` module).
 .. method:: str.zfill(width)
 
    Return a copy of the string left filled with ASCII ``'0'`` digits to
-   make a string of length *width*. A leading sign prefix (``'+'``/``'-'``
+   make a string of length *width*. A leading sign prefix (``'+'``/``'-'``)
    is handled by inserting the padding *after* the sign character rather
    than before. The original string is returned if *width* is less than
    or equal to ``len(s)``.