diff --git a/examples/app/app.nim b/examples/app/app.nim
index aeca967..1c54fd3 100644
--- a/examples/app/app.nim
+++ b/examples/app/app.nim
@@ -6,8 +6,6 @@ import asyncutils
 import ../../message
 import random
 
-const AcceptPort = Port(2000)
-
 type
   PunchdResponse = Future[tuple[msgContent: string, sock: AsyncSocket]]
   PunchdProgressCb = proc (future: PunchdResponse, msgContent: string) {.async.}
@@ -214,11 +212,13 @@ proc runApp(serverHostname: string, serverPort: Port, peerId: string,
   asyncCheck handlePunchdMessages(punchdConn)
   if otherPeerId.len == 0:
     # register and wait for connections
+    let acceptPort = rand(Port(1024) .. Port.high)
+    echo &"init server connection, probing port: {acceptPort}"
     let serverConn = await initServerConnection(serverHostname, serverPort,
-                                                AcceptPort)
+                                                acceptPort)
     asyncCheck handleServerMessages(serverConn)
     asyncCheck handlePeerNotifications(serverConn, punchdConn, peerId)
-    let myPorts = (@[AcceptPort] & serverConn.probedPorts).join(",")
+    let myPorts = (@[acceptPort] & serverConn.probedPorts).join(",")
     let req = &"{peerId}|{serverConn.probedIp}|{myPorts}"
     echo "registering: ", req
     discard await serverConn.sendRequest("register", req)