#10869: do not visit root node twice in ast.increment_lineno().
diff --git a/Doc/library/ast.rst b/Doc/library/ast.rst
index a9821e1..9d19771 100644
--- a/Doc/library/ast.rst
+++ b/Doc/library/ast.rst
@@ -173,9 +173,9 @@
.. function:: walk(node)
- Recursively yield all child nodes of *node*, in no specified order. This is
- useful if you only want to modify nodes in place and don't care about the
- context.
+ Recursively yield all descendant nodes in the tree starting at *node*
+ (including *node* itself), in no specified order. This is useful if you only
+ want to modify nodes in place and don't care about the context.
.. class:: NodeVisitor()