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-rw-r--r--ports/stm32/main.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ports/stm32/main.c b/ports/stm32/main.c
index c7b189dab..48b4692bc 100644
--- a/ports/stm32/main.c
+++ b/ports/stm32/main.c
@@ -201,7 +201,7 @@ MP_NOINLINE STATIC bool init_flash_fs(uint reset_mode) {
led_state(PYB_LED_GREEN, 1);
uint32_t start_tick = HAL_GetTick();
- uint8_t working_buf[_MAX_SS];
+ uint8_t working_buf[FF_MAX_SS];
res = f_mkfs(&vfs_fat->fatfs, FM_FAT, 0, working_buf, sizeof(working_buf));
if (res == FR_OK) {
// success creating fresh LFS