diff --git a/drivers/md/md.c b/drivers/md/md.c
index 7871e7dcd483..2069b16b50ec 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2252,6 +2252,7 @@ super_1_rdev_size_change(struct md_rdev *rdev, sector_t num_sectors)
 
 		if (!num_sectors || num_sectors > max_sectors)
 			num_sectors = max_sectors;
+		rdev->sb_start = sb_start;
 	}
 	sb = page_address(rdev->sb_page);
 	sb->data_size = cpu_to_le64(num_sectors);