diff --git a/arduino/tempLightSensor/tempLightSensor.ino b/arduino/tempLightSensor/tempLightSensor.ino
index ec9ca39..5891ca1 100644
--- a/arduino/tempLightSensor/tempLightSensor.ino
+++ b/arduino/tempLightSensor/tempLightSensor.ino
@@ -51,7 +51,7 @@ struct netConfig {
   IPAddress iot_address;
   unsigned int iot_port;
   IPAddress ntp_address;
-  unsigned int ntp_port;
+  unsigned int ntp_port;  // not used
 } config;
 
 char serial[9];
diff --git a/esp32/rssiHall/rssiHall.ino b/esp32/rssiHall/rssiHall.ino
index 4361213..8059ddb 100644
--- a/esp32/rssiHall/rssiHall.ino
+++ b/esp32/rssiHall/rssiHall.ino
@@ -51,7 +51,7 @@ struct netConfig {
   IPAddress iot_address;
   unsigned int iot_port;
   IPAddress ntp_address;
-  unsigned int ntp_port;
+  unsigned int ntp_port;  // not used
 } config;
 
 char* serial;