diff --git a/app/code/Magento/Theme/Block/Html/Title.php b/app/code/Magento/Theme/Block/Html/Title.php
index a2ef83117ccf5..921a7d6df0e49 100644
--- a/app/code/Magento/Theme/Block/Html/Title.php
+++ b/app/code/Magento/Theme/Block/Html/Title.php
@@ -79,7 +79,7 @@ public function getPageHeading()
     {
         $pageTitle = !empty($this->pageTitle) ? $this->pageTitle : $this->pageConfig->getTitle()->getShortHeading();
 
-        return $this->shouldTranslateTitle() ? __($pageTitle) : $pageTitle;
+        return $this->shouldTranslateTitle() ? __($pageTitle) : (string)$pageTitle;
     }
 
     /**