diff --git a/Models/WikiCategory.php b/Models/WikiCategory.php
index 0aa4ded..c7741c1 100755
--- a/Models/WikiCategory.php
+++ b/Models/WikiCategory.php
@@ -50,7 +50,7 @@ class WikiCategory implements \JsonSerializable
      * @var string|WikiCategoryL11n
      * @since 1.0.0
      */
-    private $name = '';
+    private string | WikiCategoryL11n $name = '';
 
     /**
      * Parent category.
@@ -117,7 +117,7 @@ class WikiCategory implements \JsonSerializable
     {
         if ($name instanceof WikiCategoryL11n) {
             $this->name = $name;
-        } elseif (isset($this->name) && $this->name instanceof WikiCategoryL11n) {
+        } elseif ($this->name instanceof WikiCategoryL11n) {
             $this->name->name = $name;
         } else {
             $this->name       = new WikiCategoryL11n();
diff --git a/tests/Bootstrap.php b/tests/Bootstrap.php
index d46fd31..b5d36a8 100755
--- a/tests/Bootstrap.php
+++ b/tests/Bootstrap.php
@@ -257,6 +257,25 @@ $CONFIG = [
         'root'  => '/',
         'https' => false,
     ],
+    'app'      => [
+        'path'    => __DIR__,
+        'default' => [
+            'app'   => 'Backend',
+            'id'    => 'backend',
+            'lang'  => 'en',
+            'theme' => 'Backend',
+            'org'   => 1,
+        ],
+        'domains' => [
+            '127.0.0.1' => [
+                'app'   => 'Backend',
+                'id'    => 'backend',
+                'lang'  => 'en',
+                'theme' => 'Backend',
+                'org'   => 1,
+            ],
+        ],
+    ],
     'socket'   => [
         'master' => [
             'host'  => '127.0.0.1',