diff --git a/backend/helper/RendererHelper.php b/backend/helper/RendererHelper.php
index 3529434a437266765148c7cd49a321de2f838005..285f4d176e9e6c7206dd3e3a07b4e93188a78dc1 100644
--- a/backend/helper/RendererHelper.php
+++ b/backend/helper/RendererHelper.php
@@ -39,6 +39,7 @@ class RendererHelper {
         $translation = $this->translator->loadTranslation($this->translator->findMatchingLanguage($_SERVER['HTTP_ACCEPT_LANGUAGE']));
         $viewHelper = new ViewHelper($translation, array_merge($this->sessionHelper->vars, $vars));
         $viewHelper->render($template);
+        $this->sessionHelper->vars = [];
     }
 
     public function redirect(string $page, array $vars = []) {