diff --git a/examples/SX127x/SX127x_FSK_Modem/SX127x_FSK_Modem.ino b/examples/SX127x/SX127x_FSK_Modem/SX127x_FSK_Modem.ino
index 3239472d..947e7ce3 100644
--- a/examples/SX127x/SX127x_FSK_Modem/SX127x_FSK_Modem.ino
+++ b/examples/SX127x/SX127x_FSK_Modem/SX127x_FSK_Modem.ino
@@ -175,16 +175,15 @@ void loop() {
     Serial.println(state);
   }
 
-  // tone() function is not available on ESP32, Arduino Due and CubeCell
-  #if !defined(ESP32) && !defined(_VARIANT_ARDUINO_DUE_X_) && !defined(__ASR6501__)
   // transmit FM tone at 1000 Hz for 1 second
   // (DIO2 is connected to Arduino pin 4)
-  tone(4, 1000);
+  // Note: tone() function is not available on ESP32, Arduino Due and CubeCell
+  //       on these platforms, the following will do nothing
+  Module::tone(4, 1000);
   delay(1000);
   // transmit FM note at 500 Hz for 1 second
-  tone(4, 500);
+  Module::tone(4, 500);
   delay(1000);
-  #endif
 
   // NOTE: after calling transmitDirect(), SX127x will start
   // transmitting immediately! This signal can jam other