diff --git a/Controller/ApiController.php b/Controller/ApiController.php
index e69389c..8baad61 100755
--- a/Controller/ApiController.php
+++ b/Controller/ApiController.php
@@ -324,7 +324,7 @@ final class ApiController extends Controller
         $view = new View($this->app->l11nManager, $request, $response);
 
         $view->addData('tcoll', $tcoll);
-        $view->addData('lang', $request->getData('lang') ?? $request->getLanguage());
+        $view->addData('lang', $request->getData('lang') ?? $request->header->l11n->language);
         $view->addData('instance', $instance);
         $view->addData('template', $instance->template);
         $view->addData('basepath', __DIR__ . '/../../../');
diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index c0b15a4..968c554 100755
--- a/Controller/BackendController.php
+++ b/Controller/BackendController.php
@@ -58,7 +58,7 @@ final class BackendController extends Controller
             ->with('tags')
             ->with('tags/title')
             ->where('virtualPath', $path)
-            ->where('tags/title/language', $response->getLanguage())
+            ->where('tags/title/language', $response->header->l11n->language)
             ->execute();
 
         list($collection, $parent) = CollectionMapper::getCollectionsByPath($path);
diff --git a/Theme/Backend/workflow-template.tpl.php b/Theme/Backend/workflow-template.tpl.php
index 144f810..fd1d927 100755
--- a/Theme/Backend/workflow-template.tpl.php
+++ b/Theme/Backend/workflow-template.tpl.php
@@ -112,7 +112,7 @@ if (!empty($template->schema)) :
             <?php foreach ($actions as $action) : ?>
                 <section class="portlet">
                     <div class="portlet-body"><?= $this->printHtml($action['name']); ?></div>
-                    <div class="portlet-body"><?= $this->printHtml($action['description'][$this->request->getLanguage()]); ?></div>
+                    <div class="portlet-body"><?= $this->printHtml($action['description'][$this->request->header->l11n->language]); ?></div>
                 </section>
             <?php endforeach; ?>
         </div>