diff --git a/apps/webhook_listeners/lib/Db/WebhookListenerMapper.php b/apps/webhook_listeners/lib/Db/WebhookListenerMapper.php
index 75456cc0b7555..617f38906cc39 100644
--- a/apps/webhook_listeners/lib/Db/WebhookListenerMapper.php
+++ b/apps/webhook_listeners/lib/Db/WebhookListenerMapper.php
@@ -227,14 +227,13 @@ public function getByEvent(string $event, ?string $userId = null): array {
 			->from($this->getTableName())
 			->where($qb->expr()->eq('event', $qb->createNamedParameter($event, IQueryBuilder::PARAM_STR)));
 
-
 		if ($userId === '' || $userId === null) {
 			$qb->andWhere($qb->expr()->emptyString('user_id_filter'));
 		} else {
 			$qb->andWhere(
 				$qb->expr()->orX(
 					$qb->expr()->emptyString('user_id_filter'),
-					$qb->expr()->eq('user_id_filter', $qb->createNamedParameter($userId)),
+					$qb->expr()->eq('user_id_filter', $qb->createNamedParameter($userId, IQueryBuilder::PARAM_STR))
 				)
 			);
 		}