diff --git a/lib/Sharing/DeckShareProvider.php b/lib/Sharing/DeckShareProvider.php
index 747c6f07b..50258c98a 100644
--- a/lib/Sharing/DeckShareProvider.php
+++ b/lib/Sharing/DeckShareProvider.php
@@ -238,7 +238,7 @@ private function getRawShare(int $id): array {
 	 */
 	private function createShareObject(array $data): IShare {
 		$share = $this->shareManager->newShare();
-		$share->setId($data['id'])
+		$share->setId((string)$data['id'])
 			->setShareType((int)$data['share_type'])
 			->setPermissions((int)$data['permissions'])
 			->setTarget($data['file_target'])