Error on installing / uninstalling the module

The only error I can find is in the schema definition, which declares the primary key using a nid field that in not defined.

function comment_acl_schema() {
  $schema['comment_acl_history'] = array(
    'fields' => array(
      'acl_id' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => 'The {node}.nid of the node.',
      ),
      'cid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => 'The {comment}.cid of the comment.',
      ),
      'uid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => 'The {user}.uid of the user to grant access to.',
      ),
    ),
    'primary key' => array('nid', 'cid', 'uid'),
  );
  return $schema;
}

As the acl_id definition contains "The {node}.nid of the node." as description, I would guess the nid field is really acl_id (or vice versa).