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-rw-r--r--ports/esp32/machine_pin.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ports/esp32/machine_pin.c b/ports/esp32/machine_pin.c
index 8a892d231..f103b9696 100644
--- a/ports/esp32/machine_pin.c
+++ b/ports/esp32/machine_pin.c
@@ -732,4 +732,4 @@ STATIC MP_DEFINE_CONST_OBJ_TYPE(
locals_dict, &machine_pin_irq_locals_dict
);
-MP_REGISTER_ROOT_POINTER(mp_obj_t machine_pin_irq_handler[49]); // 49 is the biggest of GPIO_NUM_MAX's
+MP_REGISTER_ROOT_POINTER(mp_obj_t machine_pin_irq_handler[GPIO_PIN_COUNT]);