diff --git a/src/bootloader/test.c b/src/bootloader/test.c
index 30134eb..5f83d6e 100644
--- a/src/bootloader/test.c
+++ b/src/bootloader/test.c
@@ -91,7 +91,7 @@ void main()
 		*pSpiCtrl       = (*pSpiCtrl & 0xFFFFFF00) | 50;
 		*pSpiData		= 0x9F000000;
 		*pSpiDataSize	= 8;
-		*pSpiXferSize	= 8+8*21;
+		*pSpiXferSize	= 8+648;
 		*pSpiCtrlStat	= SPI_CMD_CTRL_COMMIT;
 
 		sputs("SYS_SPI_CTRL_STAT : ");print_word(*pSpiCtrlStat);sputs("\n");