diff --git a/drivers/mmc/at91_mci.c b/drivers/mmc/at91_mci.c
index 6b7638b..d34b7d9 100644
--- a/drivers/mmc/at91_mci.c
+++ b/drivers/mmc/at91_mci.c
@@ -822,6 +822,7 @@
 	mmc->f_min = 375000;
 	mmc->f_max = 25000000;
 	mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+	mmc->caps = MMC_CAP_BYTEBLOCK;
 
 	host = mmc_priv(mmc);
 	host->mmc = mmc;