diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 42dd6316c62f..d408d1dfde7c 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -4342,4 +4342,5 @@ void btrfs_qgroup_destroy_extent_records(struct btrfs_transaction *trans)
 		ulist_free(entry->old_roots);
 		kfree(entry);
 	}
+	*root = RB_ROOT;
 }