1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 8034fbd6190c..636bae0405e8 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2710,7 +2710,7 @@ static struct r1conf *setup_conf(struct mddev *mddev)
                     || disk_idx < 0)
                         continue;
                 if (test_bit(Replacement, &rdev->flags))
-                        disk = conf->mirrors + conf->raid_disks + disk_idx;
+                        disk = conf->mirrors + mddev->raid_disks + disk_idx;
                 else
                         disk = conf->mirrors + disk_idx;