Hi, I'm upgrading from koha 16.05 to 16.11 (I'm trying to keep up to date) and I see on the updatedatabase.pl this: *DBD::mysql::db do failed: Can't DROP 'isbn'; check that column/key exists [for Statement "ALTER TABLE biblioitems DROP INDEX isbn"] at /home/vagrant/kohaclone/installer/data/mysql/updatedatabase.pl <http://updatedatabase.pl> line 13734.DBD::mysql::db do failed: Can't DROP 'issn'; check that column/key exists [for Statement "ALTER TABLE biblioitems DROP INDEX issn"] at /home/vagrant/kohaclone/installer/data/mysql/updatedatabase.pl <http://updatedatabase.pl> line 13735.* Those line shouldn't be: *drop index isbn on biblioitems;drop index issn on biblioitems;* I work always with MySQL, is MariaDB different on the index drop? Regards