diff --git a/app/tasks/maintenance/backfill_invalid_dossiers_for_tiers_task.rb b/app/tasks/maintenance/backfill_invalid_dossiers_for_tiers_task.rb
index ac99289eb..b7c1149ea 100644
--- a/app/tasks/maintenance/backfill_invalid_dossiers_for_tiers_task.rb
+++ b/app/tasks/maintenance/backfill_invalid_dossiers_for_tiers_task.rb
@@ -7,7 +7,7 @@ module Maintenance
     end
 
     def process(element)
-      element.update_column(for_tiers: false)
+      element.update_column(:for_tiers, false)
     end
   end
 end