diff --git a/pandas/core/frame.py b/pandas/core/frame.py
index ff42e39d9dbdd..f377fa1f5731a 100644
--- a/pandas/core/frame.py
+++ b/pandas/core/frame.py
@@ -3769,7 +3769,7 @@ def nlargest(self, n, columns, keep='first'):
             Number of items to retrieve
         columns : list or str
             Column name or names to order by
-        keep : {'first', 'last', False}, default 'first'
+        keep : {'first', 'last'}, default 'first'
             Where there are duplicate values:
             - ``first`` : take the first occurrence.
             - ``last`` : take the last occurrence.
@@ -3804,7 +3804,7 @@ def nsmallest(self, n, columns, keep='first'):
             Number of items to retrieve
         columns : list or str
             Column name or names to order by
-        keep : {'first', 'last', False}, default 'first'
+        keep : {'first', 'last'}, default 'first'
             Where there are duplicate values:
             - ``first`` : take the first occurrence.
             - ``last`` : take the last occurrence.
diff --git a/pandas/core/series.py b/pandas/core/series.py
index 5d0e6907a6595..34ad493d85fbc 100644
--- a/pandas/core/series.py
+++ b/pandas/core/series.py
@@ -2058,7 +2058,7 @@ def nlargest(self, n=5, keep='first'):
         ----------
         n : int
             Return this many descending sorted values
-        keep : {'first', 'last', False}, default 'first'
+        keep : {'first', 'last'}, default 'first'
             Where there are duplicate values:
             - ``first`` : take the first occurrence.
             - ``last`` : take the last occurrence.
@@ -2105,7 +2105,7 @@ def nsmallest(self, n=5, keep='first'):
         ----------
         n : int
             Return this many ascending sorted values
-        keep : {'first', 'last', False}, default 'first'
+        keep : {'first', 'last'}, default 'first'
             Where there are duplicate values:
             - ``first`` : take the first occurrence.
             - ``last`` : take the last occurrence.