Migration name changes

Hi

I've a migration class 'ProductMigration' declared as 'Products' (see code snippet).
But when I check this in the UI, I see 's' as the name (see screenshot).

When I change the name from 'Products' to 'Product' all is well. But I want to use 'Products' as the name.
If I add letters after the 's' in 'Products', everything from the 's' to the end is shown.

I suppose that everything I've done is correct because the product migration is the only migration where I'm having this issue.

Thanks in advance for helping me out.

function tadaaz_migrate_migrate_api()
{
  $api = array(
    'api' => 2,
    'groups' => array(
      'tax' => array(
        'title' => t('Taxonomy migrations'),
      ),
      'product' => array(
        'title' => t('Product/Staffel migrations'),
      ),
    ),
    'migrations' => array(
      'Colors' => array(
        'class_name' => 'ColorMigration',
        'group_name' => 'tax',
      ),
      'Styles' => array(
        'class_name' => 'StyleMigration',
        'group_name' => 'tax',
      ),
      'Products' => array(
        'class_name' => 'ProductMigration',
        'group_name' => 'product',
      ),
      'Staffels' => array(
        'class_name' => 'StaffelMigration',
        'group_name' => 'product',
      ),
    ),
  );
  return $api;

}