diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index c6320c43319a..b51f8f90f226 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -1969,7 +1969,7 @@ int iterate_extent_inodes(struct btrfs_fs_info *fs_info,
 			extent_item_objectid);
 
 	if (!search_commit_root) {
-		trans = btrfs_attach_transaction(fs_info->extent_root);
+		trans = btrfs_attach_transaction(fs_info->tree_root);
 		if (IS_ERR(trans)) {
 			if (PTR_ERR(trans) != -ENOENT &&
 			    PTR_ERR(trans) != -EROFS)