diff --git a/python/proton/_handlers.py b/python/proton/_handlers.py
index c9d1ec21f..28c3db7a7 100644
--- a/python/proton/_handlers.py
+++ b/python/proton/_handlers.py
@@ -1234,7 +1234,8 @@ def on_selectable_expired(self, event: Event) -> None:
         t = s._transport
         r = s._reactor
 
-        self.update(t, s, r.now)
+        if not s.is_terminal and t:
+            self.update(t, s, r.now)
 
     def on_connection_local_open(self, event: Event) -> None:
         c = event.connection