diff --git a/Doc/library/datetime.rst b/Doc/library/datetime.rst
index c2d7715a52cf6b..f222ec9bb771a8 100644
--- a/Doc/library/datetime.rst
+++ b/Doc/library/datetime.rst
@@ -2570,7 +2570,7 @@ Notes:
 
 (9)
    When used with the :meth:`strptime` method, the leading zero is optional
-   for  formats ``%d``, ``%m``, ``%H``, ``%I``, ``%M``, ``%S``, ``%J``, ``%U``,
+   for  formats ``%d``, ``%m``, ``%H``, ``%I``, ``%M``, ``%S``, ``%j``, ``%U``,
    ``%W``, and ``%V``. Format ``%y`` does require a leading zero.
 
 .. rubric:: Footnotes