diff --git a/addons/stock/static/src/js/stock_traceability_report_backend.js b/addons/stock/static/src/js/stock_traceability_report_backend.js
index 5ae65c7fbb4..8895243eea4 100644
--- a/addons/stock/static/src/js/stock_traceability_report_backend.js
+++ b/addons/stock/static/src/js/stock_traceability_report_backend.js
@@ -38,9 +38,9 @@ var stock_report_generic = AbstractAction.extend(ControlPanelMixin, {
             this.report_widget = new ReportWidget(this, this.given_context);
             def = this.report_widget.appendTo(this.$el);
         }
-        def.then(function () {
+        return def.then(function () {
             self.report_widget.$el.html(self.html);
-            self.report_widget.$el.find('.o_report_heading').html('<h1>Traceability Report</h1>')
+            self.report_widget.$el.find('.o_report_heading').html('<h1>Traceability Report</h1>');
             if (self.given_context.auto_unfold) {
                 _.each(self.$el.find('.fa-caret-right'), function (line) {
                     self.report_widget.autounfold(line, self.given_context.lot_name);
@@ -49,8 +49,10 @@ var stock_report_generic = AbstractAction.extend(ControlPanelMixin, {
         });
     },
     start: function() {
-        this.set_html();
-        return this._super();
+        var self = this;
+        return this._super.apply(this, arguments).then(function () {
+            self.set_html();
+        });
     },
     // Fetches the html and is previous report.context if any, else create it
     get_html: function() {
@@ -97,7 +99,7 @@ var stock_report_generic = AbstractAction.extend(ControlPanelMixin, {
                 });
             });
             framework.blockUI();
-            var url_data = self.controller_url.replace('active_id', self.given_context['active_id']);
+            var url_data = self.controller_url.replace('active_id', self.given_context.active_id);
             session.get_file({
                 url: url_data.replace('output_format', 'pdf'),
                 data: {data: JSON.stringify(dict)},