diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index dc512a86d7c7c86bad33f270abd6d977c82209b9..ff7c92e14c9a0347b03b4ca25719c58db8928151 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -4358,4 +4358,5 @@ void btrfs_qgroup_destroy_extent_records(struct btrfs_transaction *trans)
 		ulist_free(entry->old_roots);
 		kfree(entry);
 	}
+	*root = RB_ROOT;
 }