diff --git a/Models/WikiCategoryMapper.php b/Models/WikiCategoryMapper.php
index a55794e..9c6c11a 100644
--- a/Models/WikiCategoryMapper.php
+++ b/Models/WikiCategoryMapper.php
@@ -48,12 +48,12 @@ final class WikiCategoryMapper extends DataMapperAbstract
      */
     protected static array $belongsTo = [
         'parent' => [
-            'mapper' => WikiCategoryMapper::class,
+            'mapper' => self::class,
             'self'   => 'wiki_category_parent',
         ],
         'app' => [
             'mapper' => WikiAppMapper::class,
-            'self' => 'wiki_category_app'
+            'self' => 'wiki_category_app',
         ],
     ];
 
diff --git a/Models/WikiDocMapper.php b/Models/WikiDocMapper.php
index ae24b83..e499f1c 100644
--- a/Models/WikiDocMapper.php
+++ b/Models/WikiDocMapper.php
@@ -71,7 +71,7 @@ final class WikiDocMapper extends DataMapperAbstract
         ],
         'app' => [
             'mapper' => WikiAppMapper::class,
-            'self' => 'wiki_article_app'
+            'self' => 'wiki_article_app',
         ],
     ];