diff --git a/app/services/order_cycle_warning.rb b/app/services/order_cycle_warning.rb
index ffe3f9da21..5f8b532f68 100644
--- a/app/services/order_cycle_warning.rb
+++ b/app/services/order_cycle_warning.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class OrderCycleWarning
   def initialize(current_user)
     @current_user = current_user