diff --git a/FATFS/shimatta_sdio_driver/shimatta_sdio-driver.c b/FATFS/shimatta_sdio_driver/shimatta_sdio-driver.c
index 54f47da..14bee8a 100644
--- a/FATFS/shimatta_sdio_driver/shimatta_sdio-driver.c
+++ b/FATFS/shimatta_sdio_driver/shimatta_sdio-driver.c
@@ -163,7 +163,7 @@ DRESULT SDIO_disk_ioctl(BYTE cmd, void* buff){
     return res;
 }
 DWORD __attribute__((weak)) get_fattime(){
-	return 0;
+    return (1<<16) | (1<<24); // return Jan. 1st 1980 00:00:00
 }