diff --git a/public/typo3conf/ext/ep_products/Classes/Service/DateImportService.php b/public/typo3conf/ext/ep_products/Classes/Service/DateImportService.php
index 071fcbe5..6e3bd529 100644
--- a/public/typo3conf/ext/ep_products/Classes/Service/DateImportService.php
+++ b/public/typo3conf/ext/ep_products/Classes/Service/DateImportService.php
@@ -477,8 +477,8 @@ class DateImportService implements SingletonInterface, LoggerAwareInterface
             ];
         }
         usort($pickups, function ($a, $b) {
-            $timeStampA = \DateTimeImmutable::createFromFormat('d.m.Y H:i', $a['date'].' '.$a['time']);
-            $timeStampB = \DateTimeImmutable::createFromFormat('d.m.Y H:i', $b['date'].' '.$b['time']);
+            $timeStampA = \DateTimeImmutable::createFromFormat('d.m.Y H:i', $a['date'].' '.$a['time'])->getTimestamp();
+            $timeStampB = \DateTimeImmutable::createFromFormat('d.m.Y H:i', $b['date'].' '.$b['time'])->getTimestamp();
 
             return $timeStampA <=> $timeStampB;
         });