diff --git a/src/Traits/ParentPage.php b/src/Traits/ParentPage.php
index a7eac71..a89eb84 100644
--- a/src/Traits/ParentPage.php
+++ b/src/Traits/ParentPage.php
@@ -31,7 +31,9 @@ private function getParentPagesIds(int $postId): array
 			return [];
 		}
 
-		$parentPageSlug = get_all_post_type_supports(get_post_type($postId))['parent-page'][0]['slug'] ?? null;
+		$postType = get_post_type($postId);
+		$supports = get_all_post_type_supports($postType);
+		$parentPageSlug = $supports['parent-page'][0]['slug'] ?? get_post_type_object($postType)->rewrite['slug'] ?? null;
 		$parent = $parentPageSlug ? get_page_by_path($parentPageSlug) : null;
 		if (! $parent) {
 			return [];