diff --git a/lib/abf_worker/publish_observer.rb b/lib/abf_worker/publish_observer.rb
index 67a46f3ed..96dfded56 100644
--- a/lib/abf_worker/publish_observer.rb
+++ b/lib/abf_worker/publish_observer.rb
@@ -13,7 +13,7 @@ module AbfWorker
         AbfWorker::BuildListsPublishTaskManager.unlock_repository options['id']
       else
         if options['extra']['regenerate'] # Regenerate metadata
-          AbfWorker::BuildListsPublishTaskManager.unlock_rep_and_platform nil, options['lock_str']
+          AbfWorker::BuildListsPublishTaskManager.unlock_rep_and_platform nil, options['extra']['lock_str']
         elsif options['extra']['create_container'] # Container has been created
           case status
           when COMPLETED