#21653: fix doc for return type of sqlite3.Row.keys().
diff --git a/Doc/library/sqlite3.rst b/Doc/library/sqlite3.rst
index c2e6080..6097e7a 100644
--- a/Doc/library/sqlite3.rst
+++ b/Doc/library/sqlite3.rst
@@ -646,7 +646,7 @@
.. method:: keys
- This method returns a tuple of column names. Immediately after a query,
+ This method returns a list of column names. Immediately after a query,
it is the first member of each tuple in :attr:`Cursor.description`.
Let's assume we initialize a table as in the example given above::