diff --git a/Models/TagMapper.php b/Models/TagMapper.php
index 274da77..f6e55e8 100644
--- a/Models/TagMapper.php
+++ b/Models/TagMapper.php
@@ -71,6 +71,14 @@ final class TagMapper extends DataMapperAbstract
     ];
     */
 
+    /**
+     * Model to use by the mapper.
+     *
+     * @var string
+     * @since 1.0.0
+     */
+    protected static string $model = Tag::class;
+
     /**
      * Primary table.
      *
diff --git a/Theme/Backend/Lang/Navigation.de.lang.php b/Theme/Backend/Lang/Navigation.de.lang.php
new file mode 100644
index 0000000..2dd8466
--- /dev/null
+++ b/Theme/Backend/Lang/Navigation.de.lang.php
@@ -0,0 +1,19 @@
+<?php
+/**
+ * Orange Management
+ *
+ * PHP Version 7.4
+ *
+ * @package   Modules\Tag
+ * @copyright Dennis Eichhorn
+ * @license   OMS License 1.0
+ * @version   1.0.0
+ * @link      https://orange-management.org
+ */
+declare(strict_types=1);
+
+return ['Navigation' => [
+    'Create' => 'Erstellen',
+    'List'   => 'Liste',
+    'Tag'    => 'Tag',
+]];
diff --git a/Theme/Backend/Lang/de.lang.php b/Theme/Backend/Lang/de.lang.php
new file mode 100644
index 0000000..f314872
--- /dev/null
+++ b/Theme/Backend/Lang/de.lang.php
@@ -0,0 +1,22 @@
+<?php
+/**
+ * Orange Management
+ *
+ * PHP Version 7.4
+ *
+ * @package   Modules\Tag
+ * @copyright Dennis Eichhorn
+ * @license   OMS License 1.0
+ * @version   1.0.0
+ * @link      https://orange-management.org
+ */
+declare(strict_types=1);
+
+return ['Tag' => [
+    'Color'  => 'Farbe',
+    'Create' => 'Erstellen',
+    'List'   => 'Liste',
+    'Tag'    => 'Tag',
+    'Tags'   => 'Tags',
+    'Title'  => 'Titel',
+]];