diff --git a/lib/reporting/reports/orders_and_fulfillment/order_cycle_customer_totals.rb b/lib/reporting/reports/orders_and_fulfillment/order_cycle_customer_totals.rb
index e1a6fbd845..298df7daa7 100644
--- a/lib/reporting/reports/orders_and_fulfillment/order_cycle_customer_totals.rb
+++ b/lib/reporting/reports/orders_and_fulfillment/order_cycle_customer_totals.rb
@@ -178,7 +178,7 @@ module Reporting
         def voucher_amount(order)
           return '' unless voucher_applicable?(order)
 
-          (order.total - order.pre_discount_total).abs
+          order.pre_discount_total - order.total
         end
 
         def voucher_applicable?(order)