Set method in update query ignores 'false' if passed as boolean

I had to define this function:

public function deactivate($segment_id)

{ $query = $this->createQuery() ->update('Segment s') ->set('s.is_active ', false) //not working // ->set('s.is_active ', (int)false) //works ok // ->set('s.is_active ', true) //works ok ->where('s.id = ?', $segment_id); // var_dump($query->getSqlQuery());die; return $query->execute(); }

Problem is that when setting a column using boolean false you get invalid SQL query like this:
UPDATE segment SET is_active = WHERE (id = ?)

Workaround is to do it like this: set('s.is_active ', (int)false) , but since setting the same column with boolean true works, false should work too.