diff --git a/lib/Alchemy/Phrasea/SearchEngine/Elastic/ElasticsearchRecordHydrator.php b/lib/Alchemy/Phrasea/SearchEngine/Elastic/ElasticsearchRecordHydrator.php
index 819e8f9b73..fd6451d485 100644
--- a/lib/Alchemy/Phrasea/SearchEngine/Elastic/ElasticsearchRecordHydrator.php
+++ b/lib/Alchemy/Phrasea/SearchEngine/Elastic/ElasticsearchRecordHydrator.php
@@ -44,7 +44,7 @@ class ElasticsearchRecordHydrator
         $createdOn = igorw\get_in($data, ['created_on']);
         $record->setCreated($createdOn ? new \DateTime($createdOn) : $createdOn);
         $record->setDataboxId(igorw\get_in($data, ['databox_id'], 0));
-        $record->setIsStory(igorw\get_in($data, ['type']) === 'story');
+        $record->setIsStory(igorw\get_in($data, ['record_type']) === 'story');
         $record->setMimeType(igorw\get_in($data, ['mime'], 'application/octet-stream'));
         $record->setOriginalName(igorw\get_in($data, ['original_name'], ''));
         $record->setRecordId(igorw\get_in($data, ['record_id'], 0));
diff --git a/lib/Alchemy/Phrasea/SearchEngine/Elastic/Indexer/Record/Hydrator/CoreHydrator.php b/lib/Alchemy/Phrasea/SearchEngine/Elastic/Indexer/Record/Hydrator/CoreHydrator.php
index cc9306785e..c89a254148 100644
--- a/lib/Alchemy/Phrasea/SearchEngine/Elastic/Indexer/Record/Hydrator/CoreHydrator.php
+++ b/lib/Alchemy/Phrasea/SearchEngine/Elastic/Indexer/Record/Hydrator/CoreHydrator.php
@@ -51,7 +51,7 @@ class CoreHydrator implements HydratorInterface
         unset($record['parent_record_id']);
 
         if (!$record['mime']) {
-            $record['mime'] = 'application/octet-stream';
+            $record['mime'] = ($record['record_type'] == SearchEngineInterface::GEM_TYPE_STORY) ? 'regroup_doc' : 'application/octet-stream';
         }
 
         return $record;