diff --git a/Admin/Install/Navigation.php b/Admin/Install/Navigation.php
index 8d951f6..f748e26 100644
--- a/Admin/Install/Navigation.php
+++ b/Admin/Install/Navigation.php
@@ -36,7 +36,7 @@ class Navigation
      *
      * @since  1.0.0
      */
-    public static function install(string $path = null, DatabasePool $dbPool = null) : void
+    public static function install(string $path, DatabasePool $dbPool) : void
     {
         \Modules\Navigation\Admin\Installer::installExternal($dbPool, ['path' => __DIR__ . '/Navigation.install.json']);
     }
diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index f66dcdd..d626333 100644
--- a/Controller/BackendController.php
+++ b/Controller/BackendController.php
@@ -14,7 +14,6 @@ declare(strict_types=1);
 
 namespace Modules\WarehouseManagement\Controller;
 
-
 /**
  * WarehouseManagement class.
  *
diff --git a/Models/Arrival.php b/Models/Arrival.php
index a01c45b..934d2f6 100644
--- a/Models/Arrival.php
+++ b/Models/Arrival.php
@@ -12,7 +12,7 @@
  */
 declare(strict_types=1);
 
-namespace Modules\Warehousing\Models;
+namespace Modules\WarehouseManagement\Models;
 
 /**
  * Warehouse class.
@@ -60,7 +60,7 @@ class Arrival
     /**
      * Date of arrival.
      *
-     * @var \Datetime
+     * @var \DateTime
      * @since 1.0.0
      */
     private $date = null;
@@ -150,7 +150,7 @@ class Arrival
     /**
      * Get date of when the consignment arrived.
      *
-     * @return \Datetime Date of arrival
+     * @return \DateTime Date of arrival
      *
      * @since  1.0.0
      */
@@ -162,7 +162,7 @@ class Arrival
     /**
      * Set date of when the consignment arrived.
      *
-     * @param \Datetime $date Date of arrival
+     * @param \DateTime $date Date of arrival
      *
      * @return void
      *
diff --git a/Models/ArrivalStatus.php b/Models/ArrivalStatus.php
index 75b306b..febc060 100644
--- a/Models/ArrivalStatus.php
+++ b/Models/ArrivalStatus.php
@@ -12,7 +12,7 @@
  */
 declare(strict_types=1);
 
-namespace Modules\Warehousing\Models;
+namespace Modules\WarehouseManagement\Models;
 
 use phpOMS\Stdlib\Base\Enum;
 
diff --git a/Models/Article.php b/Models/Article.php
index 056aa61..bbcebca 100644
--- a/Models/Article.php
+++ b/Models/Article.php
@@ -10,7 +10,7 @@
  * @version    1.0.0
  * @link       http://website.orange-management.de
  */ /* TODO: maybe make this a framework object? and let warehousing, sales, purchase extend this */
-namespace Modules\Warehousing\Models;
+namespace Modules\WarehouseManagement\Models;
 
 /**
  * Article class.
@@ -112,7 +112,7 @@ class Article
     /**
      * Created.
      *
-     * @var \Datetime
+     * @var \DateTime
      * @since 1.0.0
      */
     private $created = null;
@@ -270,7 +270,7 @@ class Article
     /**
      * Get created.
      *
-     * @return \Datetime
+     * @return \DateTime
      *
      * @since  1.0.0
      */
@@ -282,7 +282,7 @@ class Article
     /**
      * Set created.
      *
-     * @param \Datetime $created Date of when the article got created
+     * @param \DateTime $created Date of when the article got created
      *
      * @return void
      *
diff --git a/Models/CountingList.php b/Models/CountingList.php
index 1ad77cc..ca75e4f 100644
--- a/Models/CountingList.php
+++ b/Models/CountingList.php
@@ -12,7 +12,7 @@
  */
 declare(strict_types=1);
 
-namespace Modules\Warehousing\Models;
+namespace Modules\WarehouseManagement\Models;
 
 /**
  * Counting list class.
diff --git a/Models/PackagingStatus.php b/Models/PackagingStatus.php
index 10a9c7b..2879b20 100644
--- a/Models/PackagingStatus.php
+++ b/Models/PackagingStatus.php
@@ -12,7 +12,7 @@
  */
 declare(strict_types=1);
 
-namespace Modules\Warehousing\Models;
+namespace Modules\WarehouseManagement\Models;
 
 use phpOMS\Stdlib\Base\Enum;
 
diff --git a/Models/Shipping.php b/Models/Shipping.php
index da543ba..cb57400 100644
--- a/Models/Shipping.php
+++ b/Models/Shipping.php
@@ -12,7 +12,7 @@
  */
 declare(strict_types=1);
 
-namespace Modules\Warehousing\Models;
+namespace Modules\WarehouseManagement\Models;
 
 /**
  * Warehouse class.
@@ -60,7 +60,7 @@ class Shipping
     /**
      * Date of arrival.
      *
-     * @var \Datetime
+     * @var \DateTime
      * @since 1.0.0
      */
     private $delivered = null;
@@ -174,7 +174,7 @@ class Shipping
     /**
      * Get delivered.
      *
-     * @return \Datetime
+     * @return \DateTime
      *
      * @since  1.0.0
      */
@@ -186,7 +186,7 @@ class Shipping
     /**
      * Set delivered.
      *
-     * @param \Datetime $delivered Date of delivery
+     * @param \DateTime $delivered Date of delivery
      *
      * @return void
      *
diff --git a/Models/Warehouse.php b/Models/Warehouse.php
index bc9a1f0..6de0d60 100644
--- a/Models/Warehouse.php
+++ b/Models/Warehouse.php
@@ -12,7 +12,7 @@
  */
 declare(strict_types=1);
 
-namespace Modules\Warehousing\Models;
+namespace Modules\WarehouseManagement\Models;
 
 /**
  * Warehouse class.