diff --git a/Admin/Installer.php b/Admin/Installer.php
index 5ed2e4e..d39deb1 100644
--- a/Admin/Installer.php
+++ b/Admin/Installer.php
@@ -17,6 +17,7 @@ namespace Modules\ItemManagement\Admin;
 
 use phpOMS\DataStorage\Database\DatabaseType;
 use phpOMS\DataStorage\Database\Pool;
+use phpOMS\Module\InfoManager;
 use phpOMS\Module\InstallerAbstract;
 
 /**
diff --git a/Admin/Routes/http.php b/Admin/Routes/http.php
index bee9199..2c63803 100644
--- a/Admin/Routes/http.php
+++ b/Admin/Routes/http.php
@@ -1,5 +1,7 @@
 <?php
 
+use phpOMS\Router\RouteVerb;
+
 return [
     '^.*/backend/sales/item/list.*$' => [
         [
diff --git a/Controller.php b/Controller.php
index 14ba2ce..9ec702a 100644
--- a/Controller.php
+++ b/Controller.php
@@ -90,7 +90,7 @@ class Controller extends ModuleAbstract implements WebInterface
      * @since  1.0.0
      * @author Dennis Eichhorn <d.eichhorn@oms.com>
      */
-    public function viewItemManagementSalesList(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
+    public function viewItemManagementSalesList(RequestAbstract $request, ResponseAbstract $response, $data = null) : \Serializable
     {
         $view = new View($this->app, $request, $response);
         $view->setTemplate('/Modules/ItemManagement/Theme/Backend/sales-item-list');
@@ -109,7 +109,7 @@ class Controller extends ModuleAbstract implements WebInterface
      * @since  1.0.0
      * @author Dennis Eichhorn <d.eichhorn@oms.com>
      */
-    public function viewItemManagementPurchaseList(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
+    public function viewItemManagementPurchaseList(RequestAbstract $request, ResponseAbstract $response, $data = null) : \Serializable
     {
         $view = new View($this->app, $request, $response);
         $view->setTemplate('/Modules/ItemManagement/Theme/Backend/purchase-item-list');
@@ -128,7 +128,7 @@ class Controller extends ModuleAbstract implements WebInterface
      * @since  1.0.0
      * @author Dennis Eichhorn <d.eichhorn@oms.com>
      */
-    public function viewItemManagementWarehousingList(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
+    public function viewItemManagementWarehousingList(RequestAbstract $request, ResponseAbstract $response, $data = null) : \Serializable
     {
         $view = new View($this->app, $request, $response);
         $view->setTemplate('/Modules/ItemManagement/Theme/Backend/stock-list');
@@ -147,7 +147,7 @@ class Controller extends ModuleAbstract implements WebInterface
      * @since  1.0.0
      * @author Dennis Eichhorn <d.eichhorn@oms.com>
      */
-    public function viewItemManagementSalesCreate(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
+    public function viewItemManagementSalesCreate(RequestAbstract $request, ResponseAbstract $response, $data = null) : \Serializable
     {
         $view = new View($this->app, $request, $response);
         $view->setTemplate('/Modules/ItemManagement/Theme/Backend/item-create');
@@ -166,7 +166,7 @@ class Controller extends ModuleAbstract implements WebInterface
      * @since  1.0.0
      * @author Dennis Eichhorn <d.eichhorn@oms.com>
      */
-    public function viewItemManagementPurchaseCreate(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
+    public function viewItemManagementPurchaseCreate(RequestAbstract $request, ResponseAbstract $response, $data = null) : \Serializable
     {
         $view = new View($this->app, $request, $response);
         $view->setTemplate('/Modules/ItemManagement/Theme/Backend/item-create');
@@ -185,7 +185,7 @@ class Controller extends ModuleAbstract implements WebInterface
      * @since  1.0.0
      * @author Dennis Eichhorn <d.eichhorn@oms.com>
      */
-    public function viewItemManagementWarehousingCreate(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
+    public function viewItemManagementWarehousingCreate(RequestAbstract $request, ResponseAbstract $response, $data = null) : \Serializable
     {
         $view = new View($this->app, $request, $response);
         $view->setTemplate('/Modules/ItemManagement/Theme/Backend/item-create');
diff --git a/Theme/Backend/Lang/Navigation.en.lang.php b/Theme/Backend/Lang/Navigation.en.lang.php
index 9891049..39d24c4 100644
--- a/Theme/Backend/Lang/Navigation.en.lang.php
+++ b/Theme/Backend/Lang/Navigation.en.lang.php
@@ -13,8 +13,8 @@
  * @version    1.0.0
  * @link       http://orange-management.com
  */
-$MODLANG['Navigation'] = [
+return ['Navigation' => [
     'Analyze' => 'Analyze',
     'List'    => 'List',
     'Create'  => 'Create',
-];
+]];
diff --git a/Theme/backend/Lang/en.lang.php b/Theme/backend/Lang/en.lang.php
index e3a4df0..0551e0f 100644
--- a/Theme/backend/Lang/en.lang.php
+++ b/Theme/backend/Lang/en.lang.php
@@ -13,7 +13,7 @@
  * @version    1.0.0
  * @link       http://orange-management.com
  */
-$MODLANG['ItemManagement'] = [
+return ['ItemManagement' => [
     'Accounting'       => 'Accounting',
     'IsActive'         => 'Active?',
     'All'              => 'All',
@@ -102,4 +102,4 @@ $MODLANG['ItemManagement'] = [
     'Volume'           => 'Volume',
     'Warehouse'        => 'Warehouse',
     'Width'            => 'Width',
-];
+]];