diff --git a/src/lib/Tab/LocationView/AuthorsTab.php b/src/lib/Tab/LocationView/AuthorsTab.php
index b8fc7ffbd5..b8cecb511a 100644
--- a/src/lib/Tab/LocationView/AuthorsTab.php
+++ b/src/lib/Tab/LocationView/AuthorsTab.php
@@ -95,7 +95,7 @@ private function supplyLastContributor(array &$parameters, VersionInfo $versionI
     private function supplyCreator(array &$parameters, ContentInfo $contentInfo): void
     {
         $parameters['creator'] = null;
-        $ownerId = $contentInfo->getOwner()->getUserId();
+        $ownerId = $contentInfo->ownerId;
 
         if ((new UserExists($this->userService))->isSatisfiedBy($ownerId)) {
             $parameters['creator'] = $this->userService->loadUser($ownerId);
diff --git a/src/lib/UI/Value/Content/VersionInfo.php b/src/lib/UI/Value/Content/VersionInfo.php
index ea9cf5967d..9a4e224ad1 100644
--- a/src/lib/UI/Value/Content/VersionInfo.php
+++ b/src/lib/UI/Value/Content/VersionInfo.php
@@ -18,7 +18,7 @@
  */
 class VersionInfo extends CoreVersionInfo
 {
-    protected User $author;
+    protected ?User $author;
 
     /** @var \Ibexa\Contracts\Core\Repository\Values\Content\Language[] */
     protected array $translations;