diff --git a/pandas/core/generic.py b/pandas/core/generic.py
index 49dc71954fd8f..99816237155b3 100644
--- a/pandas/core/generic.py
+++ b/pandas/core/generic.py
@@ -8315,8 +8315,8 @@ def rank(
             How to rank NaN values:
 
             * keep: assign NaN rank to NaN values
-            * top: assign smallest rank to NaN values if ascending
-            * bottom: assign highest rank to NaN values if ascending.
+            * top: assign lowest rank to NaN values
+            * bottom: assign highest rank to NaN values
 
         ascending : bool, default True
             Whether or not the elements should be ranked in ascending order.