diff --git a/Participants/ParticipantUDP.cpp b/Participants/ParticipantUDP.cpp
index 6cd6517..b9a367c 100644
--- a/Participants/ParticipantUDP.cpp
+++ b/Participants/ParticipantUDP.cpp
@@ -267,7 +267,7 @@ void ParticipantUDP::ReceiveData(unsigned char packetSize,
 void ParticipantUDP::ReceiveData(unsigned char bufferSize,
                                  Participant* remoteParticipant) {
   unsigned char msgId = this->buffer[0];
-  // std::cout << "receive msg " << (int)msgId << "\n";
+  std::cout << "receive msg " << (int)msgId << "\n";
   switch (msgId) {
     case ParticipantMsg::id: {
       ParticipantMsg* msg = new ParticipantMsg(this->buffer);