diff --git a/src/runtime/mod.rs b/src/runtime/mod.rs
index b3aa732d20099ab97b6e7651c4e4ebbaecd66eb7..ee259424adb10d50f7f3b07dc3a4ffbd62bf878a 100644
--- a/src/runtime/mod.rs
+++ b/src/runtime/mod.rs
@@ -171,7 +171,7 @@ struct NetEndpointExt {
 #[derive(Debug)]
 struct UdpEndpointExt {
     sock: UdpSocket, // already bound and connected
-    received_from_this_round: Option<SocketAddr>,
+    received_this_round: bool,
     outgoing_payloads: HashMap<Predicate, Payload>,
     getter_for_incoming: PortId,
 }