diff --git a/addons/pos_epson_printer/static/src/js/pos_epson_printer.js b/addons/pos_epson_printer/static/src/js/pos_epson_printer.js
index f72484623bb..c7d91c02021 100644
--- a/addons/pos_epson_printer/static/src/js/pos_epson_printer.js
+++ b/addons/pos_epson_printer/static/src/js/pos_epson_printer.js
@@ -2,7 +2,6 @@ odoo.define('pos_epson_printer.pos_epson_printer', function (require) {
 "use strict";
 
 var models = require('point_of_sale.models');
-var PaymentScreenWidget = require('point_of_sale.screens').PaymentScreenWidget;
 var EpsonPrinter = require('pos_epson_printer.Printer');
 
 var posmodel_super = models.PosModel.prototype;
diff --git a/addons/pos_epson_printer/static/src/js/printers.js b/addons/pos_epson_printer/static/src/js/printers.js
index e6536fa2406..86dda04915f 100644
--- a/addons/pos_epson_printer/static/src/js/printers.js
+++ b/addons/pos_epson_printer/static/src/js/printers.js
@@ -2,6 +2,7 @@
 odoo.define('pos_epson_printer.Printer', function (require) {
 "use strict";
 
+const { Gui } = require('point_of_sale.Gui');
 var core = require('web.core');
 var PrinterMixin = require('point_of_sale.Printer').PrinterMixin;
 
@@ -17,14 +18,13 @@ var EpsonPrinter = core.Class.extend(PrinterMixin, {
     },
 
     callback_connect: function (resultConnect) {
-        var self = this;
         var deviceId = 'local_printer';
         var options = {'crypto' : false, 'buffer' : false};
         if ((resultConnect == 'OK') || (resultConnect == 'SSL_CONNECT_OK')) {
             this.ePOSDevice.createDevice(deviceId, this.ePOSDevice.DEVICE_TYPE_PRINTER, options, this.callback_createDevice.bind(this));
         } else {
             this.pos.chrome.ready.then(function () {
-                self.pos.gui.show_popup('error', {
+                Gui.showPopup('ErrorPopup', {
                     'title': _t('Connection to the printer failed'),
                     'body':  _t('Please check if the printer is still connected, if the configured IP address is correct and if your printer supports the ePOS protocol.'),
                 });
@@ -33,9 +33,8 @@ var EpsonPrinter = core.Class.extend(PrinterMixin, {
     },
 
     callback_createDevice: function (deviceObj, errorCode) {
-        var self = this;
         if (deviceObj === null) {
-            this.pos.gui.show_popup('error', {
+            Gui.showPopup('ErrorPopup', {
                 'title': _t('Connection to the printer failed'),
                 'body':  _t('Please check if the printer is still connected. Error code: ') + errorCode,
             });
@@ -44,7 +43,7 @@ var EpsonPrinter = core.Class.extend(PrinterMixin, {
         this.printer = deviceObj;
         this.printer.onreceive = function(response){
             if (!response.success) {
-                self.pos.gui.show_popup('error', {
+                Gui.showPopup('ErrorPopup', {
                     'title': _t('Epson ePOS Error'),
                     'body':  _t('An error happened while sending data to the printer. Error code: ') + response.code,
                 });