diff --git a/pages/announcement/AnnouncementHandler.php b/pages/announcement/AnnouncementHandler.php
index 5b2ff2f28e1..ce0b7e064b5 100644
--- a/pages/announcement/AnnouncementHandler.php
+++ b/pages/announcement/AnnouncementHandler.php
@@ -109,7 +109,7 @@ protected function isAnnouncementsEnabled(Request $request): bool
         return $contextOrSite->getData('enableAnnouncements');
     }
 
-    protected function getAnnouncementsIntro(Request $request): string
+    protected function getAnnouncementsIntro(Request $request): ?string
     {
         $contextOrSite = $request->getContext() ?? $request->getSite();
         return $contextOrSite->getLocalizedData('announcementsIntroduction');