diff --git a/Classes/Domain/Repository/IndexRepository.php b/Classes/Domain/Repository/IndexRepository.php
index 0c231a3c..128d596a 100644
--- a/Classes/Domain/Repository/IndexRepository.php
+++ b/Classes/Domain/Repository/IndexRepository.php
@@ -36,6 +36,7 @@ class IndexRepository extends AbstractRepository
     protected $defaultOrderings = [
         'start_date' => QueryInterface::ORDER_ASCENDING,
         'start_time' => QueryInterface::ORDER_ASCENDING,
+        'uid' => QueryInterface::ORDER_ASCENDING,
     ];
 
     /**
@@ -99,11 +100,13 @@ public function findAllForBackend(
             $query->setOrderings([
                 'start_date' => QueryInterface::ORDER_ASCENDING,
                 'start_time' => QueryInterface::ORDER_ASCENDING,
+                'uid' => QueryInterface::ORDER_ASCENDING,
             ]);
         } else {
             $query->setOrderings([
                 'start_date' => QueryInterface::ORDER_DESCENDING,
                 'start_time' => QueryInterface::ORDER_DESCENDING,
+                'uid' => QueryInterface::ORDER_DESCENDING,
             ]);
         }
 
@@ -674,6 +677,7 @@ protected function getSorting(string $direction, string $field = ''): array
                 'endDate' => $direction,
                 'startDate' => $direction,
                 'startTime' => $direction,
+                'uid' => $direction,
             ];
         }
         if ('end' !== $field) {
@@ -683,6 +687,7 @@ protected function getSorting(string $direction, string $field = ''): array
         return [
             $field . 'Date' => $direction,
             $field . 'Time' => $direction,
+            'uid' => $direction,
         ];
     }
 }
diff --git a/Classes/Domain/Repository/RawIndexRepository.php b/Classes/Domain/Repository/RawIndexRepository.php
index 7d14c2ee..d66e330b 100644
--- a/Classes/Domain/Repository/RawIndexRepository.php
+++ b/Classes/Domain/Repository/RawIndexRepository.php
@@ -102,6 +102,7 @@ public function findEventsAfterStartDate(
             )
             ->addOrderBy('start_date', 'ASC')
             ->addOrderBy('start_time', 'ASC')
+            ->addOrderBy('uid', 'ASC')
             ->setMaxResults($limit);
 
         $result = $queryBuilder->executeQuery()->fetchAllAssociative();