ALTER TABLE `icinga_programstatus` ADD COLUMN `program_version` varchar(64) character set latin1 collate latin1_general_cs default NULL;
-ALTER TABLE icinga_contacts MODIFY alias TEXT character set latin1 default '';
-ALTER TABLE icinga_hosts MODIFY alias TEXT character set latin1 default '';
+ALTER TABLE icinga_contacts MODIFY alias TEXT character set latin1;
+ALTER TABLE icinga_hosts MODIFY alias TEXT character set latin1;
ALTER TABLE icinga_customvariables ADD COLUMN is_json smallint default 0;
ALTER TABLE icinga_customvariablestatus ADD COLUMN is_json smallint default 0;