diff --git a/examples/app/app.nim b/examples/app/app.nim
index 3183cbf..c0f2e8c 100644
--- a/examples/app/app.nim
+++ b/examples/app/app.nim
@@ -245,6 +245,8 @@ proc runApp(serverHostname: string, serverPort: Port, peerId: string,
     let msg = await sock.recv(4)
     echo "received message: ", msg
     sock.close()
+
+  punchdConn.sock.close()
     
 proc main() =
   if paramCount() < 3 or paramCount() > 4: