diff --git a/doc/source/whatsnew/v0.23.0.txt b/doc/source/whatsnew/v0.23.0.txt
index bb1e00bda53e2..dfbfcc7016219 100644
--- a/doc/source/whatsnew/v0.23.0.txt
+++ b/doc/source/whatsnew/v0.23.0.txt
@@ -453,7 +453,7 @@ Reshaping
 - Bug in :func:`Dataframe.pivot_table` which fails when the ``aggfunc`` arg is of type string.  The behavior is now consistent with other methods like ``agg`` and ``apply`` (:issue:`18713`)
 - Bug in :func:`DataFrame.merge` in which merging using ``Index`` objects as vectors raised an Exception (:issue:`19038`)
 - Bug in :func:`DataFrame.stack`, :func:`DataFrame.unstack`, :func:`Series.unstack` which were not returning subclasses (:issue:`15563`)
-- Bug in :func:`DataFrame.drop`, `ValueError` now raises when dropping an `Index` that has duplicates
+- Bug in :func:`DataFrame.drop`, ``ValueError`` now raises when dropping an ``Index`` that has duplicates (:issue:`19186`)
 -
 
 Numeric