diff --git a/test/test_esp32_usb_serial_hygiene.py b/test/test_esp32_usb_serial_hygiene.py
index b510f6e4a..59ec1eb79 100644
--- a/test/test_esp32_usb_serial_hygiene.py
+++ b/test/test_esp32_usb_serial_hygiene.py
@@ -164,12 +164,16 @@ int main() {
         self.assertNotIn("command_radio_reply_route", body)
         self.assertNotIn("saved_radio_apply_pending", body)
         delayed = source("src/helpers/CompanionDelayedReplies.cpp")
-        lease = delayed[delayed.index("bool CompanionDelayedReplies::hasReplyForRoute("):]
+        lease = extract_braced(delayed, "bool CompanionDelayedReplies::hasReplyForRoute(")
         self.assertIn("{ &request, &trace }", lease)
         self.assertIn("reply->route == route", lease)
         self.assertIn("reply->phase >= AwaitRadio", lease)
-        self.assertIn("reply->delivery_deadline : reply->radio_deadline", lease)
-        self.assertIn("reply->sent_deadline", lease)
+        self.assertIn("!expired(*reply, now)", lease)
+        # Lease queries and delivery share the same bounded expiry policy.
+        expiry = extract_braced(delayed, "bool CompanionDelayedReplies::expired(")
+        self.assertIn("reply.phase == AwaitAdmission", expiry)
+        self.assertIn("reply.delivery_deadline : reply.radio_deadline", expiry)
+        self.assertIn("reply.sent_pending && due(now, reply.sent_deadline)", expiry)
         self.assertIn("expected_ack_table[i].reply_route == route", body)
         self.assertNotIn("_iter_started", body)
         self.assertNotIn("lockReplyRoute", body)