diff --git a/lib/Db/SignRequestMapper.php b/lib/Db/SignRequestMapper.php
index a4e05952fa..e97cb45708 100644
--- a/lib/Db/SignRequestMapper.php
+++ b/lib/Db/SignRequestMapper.php
@@ -24,6 +24,7 @@
 
 namespace OCA\Libresign\Db;
 
+use Doctrine\DBAL\Platforms\PostgreSQLPlatform;
 use OCA\Libresign\Helper\Pagination;
 use OCA\Libresign\Service\IdentifyMethod\IIdentifyMethod;
 use OCA\Libresign\Service\IdentifyMethodService;
@@ -464,6 +465,9 @@ private function getFilesAssociatedFilesWithMeQueryBuilder(string $userId, ?stri
 				'f.status',
 				'f.created_at',
 			);
+		if (!$qb->getConnection()->getDatabasePlatform() instanceof PostgreSQLPlatform) {
+			$qb->addGroupBy('f.metadata');
+		}
 
 		$or = [
 			$qb->expr()->eq('f.user_id', $qb->createNamedParameter($userId)),