diff --git a/Classes/Controller/MetadataController.php b/Classes/Controller/MetadataController.php
index 67afcbc7f..cdb4cfd68 100644
--- a/Classes/Controller/MetadataController.php
+++ b/Classes/Controller/MetadataController.php
@@ -460,7 +460,7 @@ private function parseCollections(int $i, $value, array &$metadata) : void
         foreach ($value as $entry) {
             $collection = $this->collectionRepository->findOneByIndexName($entry);
             if ($collection) {
-                $metadata[$i]['collection'][$j] = $collection->getLabel() ? : '';
+                $metadata[$i]['collection'] = $collection->getLabel() ? : '';
                 $j++;
             }
         }