diff --git a/public/typo3conf/ext/ep_products/Classes/Domain/Repository/AbstractRepository.php b/public/typo3conf/ext/ep_products/Classes/Domain/Repository/AbstractRepository.php
index 10c6a9b8..41df34f1 100644
--- a/public/typo3conf/ext/ep_products/Classes/Domain/Repository/AbstractRepository.php
+++ b/public/typo3conf/ext/ep_products/Classes/Domain/Repository/AbstractRepository.php
@@ -114,7 +114,7 @@ abstract class AbstractRepository extends Repository
     {
         foreach (['city', 'region', 'country'] as $column) {
             $key = $column . 'Uids';
-            if (count($filterSettings[$key]) > 0) {
+            if (isset($filterSettings[$key]) && is_array($filterSettings[$key]) && count($filterSettings[$key]) > 0) {
                 $qb->andWhere($qb->expr()->in(
                     'date.' . $column,
                     $qb->createNamedParameter($filterSettings[$key], Connection::PARAM_INT_ARRAY)