diff --git a/db/migrate/20160610201627_migrate_users_notification_level.rb b/db/migrate/20160610201627_migrate_users_notification_level.rb
index ce4f00e25fa..cd8b505de9f 100644
--- a/db/migrate/20160610201627_migrate_users_notification_level.rb
+++ b/db/migrate/20160610201627_migrate_users_notification_level.rb
@@ -1,4 +1,6 @@
 class MigrateUsersNotificationLevel < ActiveRecord::Migration
+  DOWNTIME = false
+
   # Migrates only users who changed their default notification level :participating
   # creating a new record on notification settings table