diff --git a/doc/source/whatsnew/v1.4.0.rst b/doc/source/whatsnew/v1.4.0.rst
index e23b521d47840..3ee34a158902b 100644
--- a/doc/source/whatsnew/v1.4.0.rst
+++ b/doc/source/whatsnew/v1.4.0.rst
@@ -660,7 +660,7 @@ Performance improvements
 - Performance improvement in indexing with a :class:`Float64Index` (:issue:`43705`)
 - Performance improvement in indexing with a non-unique Index (:issue:`43792`)
 - Performance improvement in indexing with a listlike indexer on a :class:`MultiIndex` (:issue:`43370`)
-- Performance improvement in indexing with a :class:`MultiIndex` indexer on another :class:`MultiIndex` (:issue:43370`)
+- Performance improvement in indexing with a :class:`MultiIndex` indexer on another :class:`MultiIndex` (:issue:`43370`)
 - Performance improvement in :meth:`GroupBy.quantile` (:issue:`43469`, :issue:`43725`)
 - Performance improvement in :meth:`GroupBy.count` (:issue:`43730`, :issue:`43694`)
 - Performance improvement in :meth:`GroupBy.any` and :meth:`GroupBy.all` (:issue:`43675`, :issue:`42841`)