diff --git a/ismas/ismas_client.cpp b/ismas/ismas_client.cpp
index 3e78abb..e6475a7 100644
--- a/ismas/ismas_client.cpp
+++ b/ismas/ismas_client.cpp
@@ -56,6 +56,12 @@ void IsmasClient::printDebugMessage(int port,
                                     QString const &clientIP,
                                     int clientPort,
                                     QString const &message) {
+#if 1
+    Q_UNUSED(port);
+    Q_UNUSED(clientIP);
+    Q_UNUSED(clientPort);
+    Q_UNUSED(message);
+#else
     qDebug().noquote()
         << "\n"
         << "SEND-REQUEST-RECEIVE-RESPONSE ..." << "\n"
@@ -64,12 +70,19 @@ void IsmasClient::printDebugMessage(int port,
         << "local address ..." << clientIP << "\n"
         << "local port ......" << clientPort << "\n"
         << message;
+#endif
 }
 
 void IsmasClient::printInfoMessage(int port,
                                    QString const &clientIP,
                                    int clientPort,
                                    QString const &message) {
+#if 1
+    Q_UNUSED(port);
+    Q_UNUSED(clientIP);
+    Q_UNUSED(clientPort);
+    Q_UNUSED(message);
+#else
     qInfo().noquote()
         << "\n"
         << "SEND-REQUEST-RECEIVE-RESPONSE ..." << "\n"
@@ -78,6 +91,7 @@ void IsmasClient::printInfoMessage(int port,
         << "local address ..." << clientIP << "\n"
         << "local port ......" << clientPort << "\n"
         << message;
+#endif
 }
 
 void IsmasClient::printErrorMessage(int port,