diff --git a/src/lib/Menu/ContentRightSidebarBuilder.php b/src/lib/Menu/ContentRightSidebarBuilder.php
index 0372f0abed..84d5085c5b 100644
--- a/src/lib/Menu/ContentRightSidebarBuilder.php
+++ b/src/lib/Menu/ContentRightSidebarBuilder.php
@@ -477,7 +477,7 @@ private function getContentPreviewItem(
         array $options
     ): ItemInterface {
         $versionNo = $content->getVersionInfo()->versionNo;
-        $languageCode = $content->contentInfo->mainLanguageCode;
+        $languageCode = $content->getDefaultLanguageCode();
 
         $siteAccesses = $this->siteaccessResolver->getSiteAccessesListForLocation(
             $location,