Unknown column name 'table.column' in 'field list'

Unknown column name 'table.column' in 'field list'

I'm struggling with a weird issue with MySQL while using an inner join
(although I'm not sure if that's the cause of it). My issue occurs when I
try to select a column from a particular table (the column is ambiguous).
I'm getting a friendly little error telling me that the column doesn't
exist. (Unknown column 'items.id' in 'field list')
Anyway, here's my query:
SELECT `items`.`id`, `chemical_name`, `full_name`, `amount`, `smiles`,
`inchi`, `inchikey`, `average_mass`, `molecular_weight`,
`monoisotopic_mass`, `nominal_mass` FROM `items` A INNER JOIN `chemicals`
B ON A.csid = B.csid WHERE `owner` = '2'
Am I doing something wrong or is this some weird MySQL bug?
Thanks