diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index a85b5f53856eeeafbb61a526e3f8fbc5a7f88289..10dfb41f4c224c3bd70c2aace46bbe79573dbc63 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -550,7 +550,6 @@ static int btrfs_dev_replace_finishing(struct btrfs_fs_info *fs_info,
 	tgt_device->is_tgtdev_for_dev_replace = 0;
 	tgt_device->devid = src_device->devid;
 	src_device->devid = BTRFS_DEV_REPLACE_DEVID;
-	tgt_device->bytes_used = src_device->bytes_used;
 	memcpy(uuid_tmp, tgt_device->uuid, sizeof(uuid_tmp));
 	memcpy(tgt_device->uuid, src_device->uuid, sizeof(tgt_device->uuid));
 	memcpy(src_device->uuid, uuid_tmp, sizeof(src_device->uuid));