diff --git a/modules/ticket/back/methods/sale/refund.js b/modules/ticket/back/methods/sale/refund.js
index 66c0550e0..c0c431636 100644
--- a/modules/ticket/back/methods/sale/refund.js
+++ b/modules/ticket/back/methods/sale/refund.js
@@ -98,7 +98,7 @@ module.exports = Self => {
                 const createdSale = await models.Sale.create({
                     ticketFk: refundTicketId,
                     itemFk: sale.itemFk,
-                    quantity: sale.quantity,
+                    quantity: - sale.quantity,
                     concept: sale.concept,
                     price: sale.price,
                     discount: sale.discount,
@@ -122,7 +122,7 @@ module.exports = Self => {
 
                     await models.TicketService.create({
                         description: service.description,
-                        quantity: service.quantity,
+                        quantity: - service.quantity,
                         price: service.price,
                         taxClassFk: service.taxClassFk,
                         ticketFk: refundTicketId,