My website, let's call it example.com, has a few Post Types:
- Post (the default post type) with the slug 'blog'
- Cases with the slug 'cases'
- Klanten with the slug 'klanten' (Dutch word for clients)
Try to call register_post_type() param 'rewrite' with additional argument 'with_front' => false
From Codex documentation: 'with_front' => bool Should the permalink structure be prepended with the front base. (example: if your permalink structure is /blog/, then your links will be: false->/news/, true->/blog/news/). Defaults to true
$args = array( /*other args*/ 'rewrite' => array('slug' => 'cases', 'with_front' => false), /*other args*/ ); register_post_type( 'cases', $args );