diff --git a/stm-firmware/fatfs/shimatta_sdio_driver/shimatta_sdio.c b/stm-firmware/fatfs/shimatta_sdio_driver/shimatta_sdio.c
index 48cf8cc..c6f030a 100644
--- a/stm-firmware/fatfs/shimatta_sdio_driver/shimatta_sdio.c
+++ b/stm-firmware/fatfs/shimatta_sdio_driver/shimatta_sdio.c
@@ -714,7 +714,7 @@ DRESULT sdio_disk_write(const BYTE *buff, DWORD sector, UINT count)
 			ret = sdio_check_status_register_cmd13(card_info.rca, &status.value);
 		} while (status.statusstruct.CURRENT_STATE == CURRENT_STATE_PRG ||
 			 status.statusstruct.CURRENT_STATE == CURRENT_STATE_RCV ||
-			 !ret);
+			 ret);
 
 		if (status.statusstruct.CURRENT_STATE == CURRENT_STATE_STBY) {
 			if (sdio_send_select_card_cmd7(card_info.rca))