diff --git a/modules/ticket/front/sale/index.html b/modules/ticket/front/sale/index.html
index 607a0396e..ae85fbbfd 100644
--- a/modules/ticket/front/sale/index.html
+++ b/modules/ticket/front/sale/index.html
@@ -53,9 +53,9 @@
                 </vn-button>
             </vn-tool-bar>
             <vn-one class="taxes" ng-if="$ctrl.sales.length > 0">
-                <p><vn-label translate>Subtotal</vn-label> {{$ctrl.subtotal | currency: 'EUR':2}}</p>
-                <p><vn-label translate>VAT</vn-label> {{$ctrl.VAT | currency: 'EUR':2}}</p>
-                <p><vn-label><strong>Total</strong></vn-label> <strong>{{$ctrl.total | currency: 'EUR':2}}</strong></p>
+                <p><vn-label translate>Subtotal</vn-label> {{$ctrl.subtotal | currency: 'EUR': 2}}</p>
+                <p><vn-label translate>VAT</vn-label> {{$ctrl.VAT | currency: 'EUR': 2}}</p>
+                <p><vn-label><strong>Total</strong></vn-label> <strong>{{$ctrl.total | currency: 'EUR': 2}}</strong></p>
             </vn-one>
         </vn-horizontal>
         <vn-table model="model">
diff --git a/modules/ticket/front/sale/index.js b/modules/ticket/front/sale/index.js
index 31b9f9a60..06ede5bb7 100644
--- a/modules/ticket/front/sale/index.js
+++ b/modules/ticket/front/sale/index.js
@@ -69,11 +69,11 @@ class Controller extends Section {
     }
 
     refreshTotal() {
-        this.loadSubTotal();
-        this.loadVAT();
+        this.getSubTotal();
+        this.getVat();
     }
 
-    loadSubTotal() {
+    getSubTotal() {
         if (!this.$params.id || !this.sales) return;
         this.$http.get(`Tickets/${this.$params.id}/subtotal`).then(res => {
             this.subtotal = res.data || 0.0;
@@ -81,13 +81,16 @@ class Controller extends Section {
     }
 
     getSaleTotal(sale) {
-        if (!sale.quantity || !sale.price)
-            return;
+        if (sale.quantity == null || sale.price == null)
+            return null;
 
-        return sale.quantity * sale.price * ((100 - sale.discount) / 100);
+        const price = sale.quantity * sale.price;
+        const discount = (sale.discount * price) / 100;
+
+        return price - discount;
     }
 
-    loadVAT() {
+    getVat() {
         this.VAT = 0.0;
         if (!this.$params.id || !this.sales) return;
         this.$http.get(`Tickets/${this.$params.id}/getVAT`).then(res => {
@@ -320,9 +323,10 @@ class Controller extends Section {
 
     updatePrice() {
         const sale = this.edit.sale;
-        if (this.edit.price != sale.price) {
+        const newPrice = this.edit.price;
+        if (newPrice != null && newPrice != sale.price) {
             const query = `Sales/${sale.id}/updatePrice`;
-            this.$http.post(query, {newPrice: this.edit.price}).then(res => {
+            this.$http.post(query, {newPrice}).then(res => {
                 sale.price = res.data.price;
 
                 this.vnApp.showSuccess(this.$t('Data saved!'));
@@ -363,7 +367,8 @@ class Controller extends Section {
 
     changeDiscount() {
         const sale = this.edit.sale;
-        if (this.edit.discount != sale.discount)
+        const newDiscount = this.edit.discount;
+        if (newDiscount != null && newDiscount != sale.discount)
             this.updateDiscount([sale]);
 
         this.$.editDiscount.hide();
@@ -371,13 +376,12 @@ class Controller extends Section {
 
     changeMultipleDiscount() {
         const sales = this.edit.sales;
+        const newDiscount = this.edit.discount;
         const hasChanges = sales.some(sale => {
-            return sale.discount != this.edit.discount;
+            return sale.discount != newDiscount;
         });
 
-        console.log(hasChanges);
-
-        if (hasChanges)
+        if (newDiscount != null && hasChanges)
             this.updateDiscount(sales);
 
         this.$.editDiscountDialog.hide();