Change owner for all tables in a database in one batch

Hello,

by accident I have wrong owner for all tables in my 8.4.13 database:

bukvy=> select * from pg_tables where tableowner = 'skat';
schemaname | tablename | tableowner |
tablespace | hasindexes | hasrules | hastriggers
------------+------------------------------------+------------+------------+------------+----------+-------------
public | drupal_actions | skat |
| t | f | f
public | drupal_batch | skat |
| t | f | f
public | drupal_authmap | skat |
| t | f | f
....
public | drupal_watchdog | skat |
| t | f | f
(83 rows)

But they actually should have the user "bukvy" as the owner.

Is there maybe a one-liner for changing the ownership in 1 batch
or should I execute "alter table .... set owner to bukvy" one by one?

Thank you
Alex