diff --git a/app/services/order_cycle_form.rb b/app/services/order_cycle_form.rb
index 88280984d5..d4334db495 100644
--- a/app/services/order_cycle_form.rb
+++ b/app/services/order_cycle_form.rb
@@ -39,7 +39,7 @@ class OrderCycleForm
 
   def add_exception_to_order_cycle_errors(exception)
     error = exception.message.split(":").last.strip
-    order_cycle.errors.add(:base, error) if !order_cycle.errors.to_a.include?(error)
+    order_cycle.errors.add(:base, error) if order_cycle.errors.to_a.exclude?(error)
   end
 
   def apply_exchange_changes