diff --git a/src/rendezvous_mediator.rs b/src/rendezvous_mediator.rs
index 89c1ca227..2b2dd05bc 100644
--- a/src/rendezvous_mediator.rs
+++ b/src/rendezvous_mediator.rs
@@ -379,10 +379,9 @@ impl RendezvousMediator {
             )
             .await?;
             let local_addr = socket.local_addr();
-            // key important here for punch hole to tell gateway incoming peer is safe.
-            // before we use 300ms, 1000ms seems more safe.
+            // key important here for punch hole to tell my gateway incoming peer is safe.
             // it can not be async here, because local_addr can not be reused, we must close the connection before use it again.
-            allow_err!(socket_client::connect_tcp(peer_addr, local_addr, 1000).await);
+            allow_err!(socket_client::connect_tcp(peer_addr, local_addr, 30).await);
             socket
         };
         let mut msg_out = Message::new();