diff --git a/Marlin/src/HAL/HAL_LPC1768/include/Arduino.h b/Marlin/src/HAL/HAL_LPC1768/include/Arduino.h
index 64c0e9ec87..f823df9470 100644
--- a/Marlin/src/HAL/HAL_LPC1768/include/Arduino.h
+++ b/Marlin/src/HAL/HAL_LPC1768/include/Arduino.h
@@ -28,16 +28,20 @@
 
 #include "../pinmapping.h"
 
-#define LOW          0x00
 #define HIGH         0x01
-#define CHANGE       0x02
-#define FALLING      0x03
-#define RISING       0x04
+#define LOW          0x00
 
 #define INPUT        0x00
 #define OUTPUT       0x01
 #define INPUT_PULLUP 0x02
 
+#define LSBFIRST     0
+#define MSBFIRST     1
+
+#define CHANGE       0x02
+#define FALLING      0x03
+#define RISING       0x04
+
 #define E2END 0xFFF // EEPROM end address
 
 typedef uint8_t byte;