diff --git a/hardware/arduino/avr/variants/robot_control/pins_arduino.h b/hardware/arduino/avr/variants/robot_control/pins_arduino.h
index 1967845c0..f167896f8 100644
--- a/hardware/arduino/avr/variants/robot_control/pins_arduino.h
+++ b/hardware/arduino/avr/variants/robot_control/pins_arduino.h
@@ -94,6 +94,8 @@ static const uint8_t LED1	 = 17;  // D17 - RX_Led
 extern const uint8_t PROGMEM analog_pin_to_channel_PGM[];
 #define analogPinToChannel(P)  ( pgm_read_byte( analog_pin_to_channel_PGM + (P) ) )
 
+#define digitalPinToInterrupt(p) ((p) == 0 ? 2 : ((p) == 1 ? 3 : ((p) == 2 ? 1 : ((p) == 3 ? 0 : ((p) == 7 ? 4 : -1)))))
+
 #ifdef ARDUINO_MAIN
 
 // On the Arduino board, digital pins are also used
diff --git a/hardware/arduino/avr/variants/robot_motor/pins_arduino.h b/hardware/arduino/avr/variants/robot_motor/pins_arduino.h
index 36d2742ad..cde2f3fc0 100644
--- a/hardware/arduino/avr/variants/robot_motor/pins_arduino.h
+++ b/hardware/arduino/avr/variants/robot_motor/pins_arduino.h
@@ -89,6 +89,8 @@ static const uint8_t TK4 = 12;   	// A11
 extern const uint8_t PROGMEM analog_pin_to_channel_PGM[];
 #define analogPinToChannel(P)  ( pgm_read_byte( analog_pin_to_channel_PGM + (P) ) )
 
+#define digitalPinToInterrupt(p) ((p) == 0 ? 2 : ((p) == 1 ? 3 : ((p) == 2 ? 1 : ((p) == 3 ? 0 : ((p) == 7 ? 4 : -1)))))
+
 #ifdef ARDUINO_MAIN
 
 // On the Arduino board, digital pins are also used