diff --git a/Controller/ApiController.php b/Controller/ApiController.php
index 01d8ce2..6dd71ff 100644
--- a/Controller/ApiController.php
+++ b/Controller/ApiController.php
@@ -74,6 +74,7 @@ final class ApiController extends Controller
      */
     private function importDataFromRequest(RequestAbstract $request) : bool
     {
+        /** @var \Modules\Exchange\Models\InterfaceManager[] $interfaces */
         $interfaces = InterfaceManagerMapper::getAll();
         foreach ($interfaces as $interface) {
             if ($request->getData('exchange') ?? '' === $interface->getInterfacePath()) {
diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index 3c2fd12..41b4a7f 100644
--- a/Controller/BackendController.php
+++ b/Controller/BackendController.php
@@ -70,6 +70,7 @@ final class BackendController extends Controller
         $view->setTemplate('/Modules/Exchange/Theme/Backend/exchange-export-list');
         $view->addData('nav', $this->app->moduleManager->get('Navigation')->createNavigationMid(1007001001, $request, $response));
 
+        /** @var \Modules\Exchange\Models\InterfaceManager[] $interfaces */
         $interfaces = InterfaceManagerMapper::getAll();
 
         $export = [];
@@ -102,6 +103,7 @@ final class BackendController extends Controller
         $view->setTemplate('/Modules/Exchange/Theme/Backend/exchange-import-list');
         $view->addData('nav', $this->app->moduleManager->get('Navigation')->createNavigationMid(1007001001, $request, $response));
 
+        /** @var \Modules\Exchange\Models\InterfaceManager[] $interfaces */
         $interfaces = InterfaceManagerMapper::getAll();
 
         $import = [];
@@ -155,6 +157,7 @@ final class BackendController extends Controller
         $view->setTemplate('/Modules/Exchange/Theme/Backend/exchange-import');
         $view->addData('nav', $this->app->moduleManager->get('Navigation')->createNavigationMid(1007001001, $request, $response));
 
+        /** @var \Modules\Exchange\Models\InterfaceManager $interface */
         $interface = InterfaceManagerMapper::get((int) $request->getData('id'));
 
         $view->addData('interface', $interface);