diff --git a/hardware/arduino/sam/variants/arduino_due_x/variant.h b/hardware/arduino/sam/variants/arduino_due_x/variant.h
index 9e363e47b..b1c601816 100644
--- a/hardware/arduino/sam/variants/arduino_due_x/variant.h
+++ b/hardware/arduino/sam/variants/arduino_due_x/variant.h
@@ -56,7 +56,7 @@ extern "C"{
 
 // Number of pins defined in PinDescription array
 #define PINS_COUNT           (79u)
-#define NUM_DIGITAL_PINS     (53u)
+#define NUM_DIGITAL_PINS     (54u)
 #define NUM_ANALOG_INPUTS    (12u)
 
 // Interrupts