diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 04ca0a4075b6c9..cacdb2c5d15280 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -4410,4 +4410,5 @@ void btrfs_qgroup_destroy_extent_records(struct btrfs_transaction *trans)
 		ulist_free(entry->old_roots);
 		kfree(entry);
 	}
+	*root = RB_ROOT;
 }