diff --git a/lib/Folder/FolderManager.php b/lib/Folder/FolderManager.php
index 18141c399..f8334ad4f 100644
--- a/lib/Folder/FolderManager.php
+++ b/lib/Folder/FolderManager.php
@@ -567,7 +567,7 @@ public function searchUsers(int $id, string $search = '', int $limit = 10, int $
 				foreach ($foundUsers as $uid => $displayName) {
 					if (!isset($users[$uid])) {
 						$users[$uid] = [
-							'uid' => (string)$uid,
+							'uid' => $uid,
 							'displayname' => $displayName,
 						];
 					}
diff --git a/lib/Mount/GroupFolderStorage.php b/lib/Mount/GroupFolderStorage.php
index b84690ae6..f3ca4ff1b 100644
--- a/lib/Mount/GroupFolderStorage.php
+++ b/lib/Mount/GroupFolderStorage.php
@@ -26,8 +26,6 @@ class GroupFolderStorage extends Quota implements IConstructableStorage {
 	private readonly ?ICacheEntry $rootEntry;
 	private readonly IUserSession $userSession;
 	private readonly ?IUser $mountOwner;
-	/** @var ICache|null */
-	public $cache;
 
 	public function __construct(array $parameters) {
 		parent::__construct($parameters);