operator does not exist: integer = boolean

[Maxime Chambreuil (http://www.savoirfairelinux.com)]

Using OpenERP 6.1, I tried to print a verification list report and I got:

operator does not exist: integer = boolean
LINE 1: ...,wiki_wiki.id FROM "wiki_wiki" WHERE wiki_wiki.id IN (false)...
^
HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.

(<class 'psycopg2.ProgrammingError'>, ProgrammingError('operator does not exist: integer = boolean\nLINE 1: ...,wiki_wiki.id FROM "wiki_wiki" WHERE wiki_wiki.id IN (false)...\n ^\nHINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.\n',), <traceback object at 0x4bd3998>)