diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index d189e8c4436e..6d2c302c3673 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -1309,7 +1309,7 @@ static inline void mmc_apply_rel_rw(struct mmc_blk_request *brq,
 {
 	if (!(card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN)) {
 		/* Legacy mode imposes restrictions on transfers. */
-		if (!IS_ALIGNED(brq->cmd.arg, card->ext_csd.rel_sectors))
+		if (!IS_ALIGNED(blk_rq_pos(req), card->ext_csd.rel_sectors))
 			brq->data.blocks = 1;
 
 		if (brq->data.blocks > card->ext_csd.rel_sectors)