diff --git a/variants/m5stack_core2/pins_arduino.h b/variants/m5stack_core2/pins_arduino.h
index 2bba712e253..895c7c0de2a 100644
--- a/variants/m5stack_core2/pins_arduino.h
+++ b/variants/m5stack_core2/pins_arduino.h
@@ -4,7 +4,7 @@
 #include <stdint.h>
 
 #define EXTERNAL_NUM_INTERRUPTS 16
-#define NUM_DIGITAL_PINS        20
+#define NUM_DIGITAL_PINS        40
 #define NUM_ANALOG_INPUTS       16
 
 #define analogInputToDigitalPin(p)  (((p)<20)?(analogChannelToDigitalPin(p)):-1)