diff --git a/src/app/app.ino b/src/app/app.ino
index cb33803..eb63213 100644
--- a/src/app/app.ino
+++ b/src/app/app.ino
@@ -117,6 +117,7 @@ void setup()
   Serial.begin(115200, SERIAL_8N1, SERIAL_TX_ONLY);
   delay(1000);
   Serial.println("\nSetup begin");
+  Serial.printf("Size of mailbox data packets: %d\nSize of weather data packets: %d\n", sizeof mdp, sizeof wsdp);
   //We set the WiFi part up :
   gotIp = WiFi.onStationModeGotIP(&(gotIpFunc));
   lostConnection = WiFi.onStationModeDisconnected(&(lostConnectionFunc));