#4611: fix typo.
diff --git a/Doc/extending/extending.rst b/Doc/extending/extending.rst
index ae9e493..8c2268e 100644
--- a/Doc/extending/extending.rst
+++ b/Doc/extending/extending.rst
@@ -865,7 +865,7 @@
The advantage of borrowing over owning a reference is that you don't need to
take care of disposing of the reference on all possible paths through the code
--- in other words, with a borrowed reference you don't run the risk of leaking
-when a premature exit is taken. The disadvantage of borrowing over leaking is
+when a premature exit is taken. The disadvantage of borrowing over owning is
that there are some subtle situations where in seemingly correct code a borrowed
reference can be used after the owner from which it was borrowed has in fact
disposed of it.