diff --git a/hardware/arduino/variants/mega/pins_arduino.h b/hardware/arduino/variants/mega/pins_arduino.h
index 237173adc..57ec97f9c 100644
--- a/hardware/arduino/variants/mega/pins_arduino.h
+++ b/hardware/arduino/variants/mega/pins_arduino.h
@@ -39,7 +39,7 @@ const static uint8_t SCK  = 52;
 
 const static uint8_t SDA = 20;
 const static uint8_t SCL = 21;
-const static uint8_t LED = 13;
+const static uint8_t LED_BUILTIN = 13;
 
 const static uint8_t A0 = 54;
 const static uint8_t A1 = 55;
diff --git a/hardware/arduino/variants/standard/pins_arduino.h b/hardware/arduino/variants/standard/pins_arduino.h
index 3999d1fcd..6e774d462 100644
--- a/hardware/arduino/variants/standard/pins_arduino.h
+++ b/hardware/arduino/variants/standard/pins_arduino.h
@@ -44,7 +44,7 @@ const static uint8_t SCK  = 13;
 
 const static uint8_t SDA = 18;
 const static uint8_t SCL = 19;
-const static uint8_t LED = 13;
+const static uint8_t LED_BUILTIN = 13;
 
 const static uint8_t A0 = 14;
 const static uint8_t A1 = 15;