diff --git a/Docs/manual.texi b/Docs/manual.texi
index d52e46fe909..c81704a88f8 100644
--- a/Docs/manual.texi
+++ b/Docs/manual.texi
@@ -51057,6 +51057,9 @@ not yet 100% confident in this code.
 @appendixsubsec Changes in release 3.23.53
 @itemize @bullet
 @item
+Fixed a bug that @code{OPTIMIZE} of locked and modified MyISAM table,
+reported table corruption.
+@item
 Fixed a @code{BDB}-related @code{ALTER TABLE} bug with dropping a column
 and shutting down immediately thereafter.
 @item