diff --git a/app/Services/Pacs/Sync/Pipes/ArchiveStudies.php b/app/Services/Pacs/Sync/Pipes/ArchiveStudies.php
index b193eda..ab0fa14 100644
--- a/app/Services/Pacs/Sync/Pipes/ArchiveStudies.php
+++ b/app/Services/Pacs/Sync/Pipes/ArchiveStudies.php
@@ -20,7 +20,7 @@ public function __invoke(StudiesSync $sync, Closure $next): StudiesSync
             }
 
             $payload = [
-                'is_archived' => true,
+                'archived_at' => now(),
                 'updated_at' => now(),
             ];
             DB::table('studies')->where('id', $study_id)->update($payload);
@@ -30,7 +30,7 @@ public function __invoke(StudiesSync $sync, Closure $next): StudiesSync
                 ->category(Category::SYSTEM)
                 ->on($study_id)
                 ->orthanc($orthanc_uuid)
-                ->did(Activity::Study_Archived)
+                ->did(Activity::Study_Archive)
                 ->log(false);
         }