diff --git a/wakamaa_integrated/wakamaa_integrated.ino b/wakamaa_integrated/wakamaa_integrated.ino
index c609b0b..1422099 100644
--- a/wakamaa_integrated/wakamaa_integrated.ino
+++ b/wakamaa_integrated/wakamaa_integrated.ino
@@ -22,10 +22,11 @@ char * buffer;
  * 40.115.26.19 - ethinnoday-lwm2m-server.westeurope.cloudapp.azure.com
  * 5.39.83.206  - leshan.eclipse.org
  */
-ArduinoClient wakaamaClient("coap://5.39.83.206:5683");
+ArduinoClient wakaamaClient("yvan_arduino_client", "coap://5.39.83.206:5683");
 
 void setup() {
-  buffer = static_cast<char*>(malloc(250));
+  buffer = static_cast<char*>(malloc(5));
+  memset(buffer, 0, 5);
   DEBUG_STREAM.begin(DEBUG_STREAM_BAUD);
   while(!DEBUG_STREAM) {
     ;
@@ -61,7 +62,7 @@ void loop() {
     }
   }
 
-  nbIOT.sendSocket(pingSocket, "87.229.111.223", 1111, (uint8_t*)"asdf", 4);
+  nbIOT.sendSocket(pingSocket, "87.229.111.223", 1111, (uint8_t*)"pong", 4);
   pending = nbIOT.socketBytesPending(pingSocket);
   if(pending > 0) {
     nbIOT.socketReceive(pingSocket, buffer, pending);