diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index d7690f86fdb9a6202edfa6d8fa5f95517fe8e75b..9ebccf624571da56e42506d7ccfef8fbe935ca0c 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1186,6 +1186,7 @@ static void make_request(struct mddev *mddev, struct bio * bio)
 				   atomic_read(&bitmap->behind_writes) == 0);
 		}
 		r1_bio->read_disk = rdisk;
+		r1_bio->start_next_window = 0;
 
 		read_bio = bio_clone_mddev(bio, GFP_NOIO, mddev);
 		bio_trim(read_bio, r1_bio->sector - bio->bi_iter.bi_sector,