diff --git a/ports/stm32/storage.c b/ports/stm32/storage.c
index 0fa3750951..e24dcdb621 100644
--- a/ports/stm32/storage.c
+++ b/ports/stm32/storage.c
@@ -42,7 +42,7 @@
 #define STORAGE_IDLE_TICK(tick) (((tick) & ~(SYSTICK_DISPATCH_NUM_SLOTS - 1) & STORAGE_SYSTICK_MASK) == 0)
 
 #if defined(MICROPY_HW_BDEV2_IOCTL)
-#define FLASH_PART2_START_BLOCK (FLASH_PART1_START_BLOCK + MICROPY_HW_BDEV2_IOCTL(BDEV_IOCTL_NUM_BLOCKS, 0))
+#define FLASH_PART2_START_BLOCK (FLASH_PART1_START_BLOCK + MICROPY_HW_BDEV_IOCTL(BDEV_IOCTL_NUM_BLOCKS, 0))
 #endif
 
 static bool storage_is_initialised = false;