further clarify
diff --git a/Misc/NEWS b/Misc/NEWS
index 304977b..f7c8cc0 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -126,8 +126,8 @@
Library
-------
-- Issue #8750: Fixed MutableSet's methods to correctly handle
- reflexive operations, namely x -= x and x ^= x.
+- Issue #8750: Fixed MutableSet's methods to correctly handle reflexive
+ operations on its self, namely x -= x and x ^= x.
- Issue #9129: smtpd.py is vulnerable to DoS attacks deriving from missing
error handling when accepting a new connection.