diff --git a/block/blk-lib.c b/block/blk-lib.c
index aa62201601c5..1f196cf0aa5d 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -161,7 +161,7 @@ static int __blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
 		return -EOPNOTSUPP;
 
 	/* Ensure that max_write_same_sectors doesn't overflow bi_size */
-	max_write_same_sectors = UINT_MAX >> 9;
+	max_write_same_sectors = bio_allowed_max_sectors(q);
 
 	while (nr_sects) {
 		bio = next_bio(bio, 1, gfp_mask);