diff --git a/tornado/fw/mmc-hw.c b/tornado/fw/mmc-hw.c
index c4c0a4f..f4098da 100644
--- a/tornado/fw/mmc-hw.c
+++ b/tornado/fw/mmc-hw.c
@@ -74,6 +74,7 @@ uint8_t mmc_recv(void)
 {
 	uint8_t i, v = 0;
 
+	SET(MMC_MOSI);
 	for (i = 0; i != 8; i++) {
 		SET(MMC_CLK);
 		v = (v << 1) | PIN(MMC_MISO);