diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 9dd1bd358434..829a6eebcdce 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2595,13 +2595,13 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
 	/* Useful defaults if platform data is unset. */
 	if (host->use_dma == TRANS_MODE_IDMAC) {
 		mmc->max_segs = host->ring_size;
-		mmc->max_blk_size = 65536;
+		mmc->max_blk_size = 65535;
 		mmc->max_seg_size = 0x1000;
 		mmc->max_req_size = mmc->max_seg_size * host->ring_size;
 		mmc->max_blk_count = mmc->max_req_size / 512;
 	} else if (host->use_dma == TRANS_MODE_EDMAC) {
 		mmc->max_segs = 64;
-		mmc->max_blk_size = 65536;
+		mmc->max_blk_size = 65535;
 		mmc->max_blk_count = 65535;
 		mmc->max_req_size =
 				mmc->max_blk_size * mmc->max_blk_count;
@@ -2609,7 +2609,7 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
 	} else {
 		/* TRANS_MODE_PIO */
 		mmc->max_segs = 64;
-		mmc->max_blk_size = 65536; /* BLKSIZ is 16 bits */
+		mmc->max_blk_size = 65535; /* BLKSIZ is 16 bits */
 		mmc->max_blk_count = 512;
 		mmc->max_req_size = mmc->max_blk_size *
 				    mmc->max_blk_count;