Poll Schema mismatch after upgrade D6 to D7

poll_vote

    column chid - difference on: default
    declared: array('description' => 'TODO: please describe this field!', 'type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE)
    actual: array('description' => 'TODO: please describe this field!', 'type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0)
    column nid - difference on: default
    declared: array('description' => 'TODO: please describe this field!', 'type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE)
    actual: array('description' => 'TODO: please describe this field!', 'type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0)