diff --git a/addons/web_kanban/static/src/js/kanban_column.js b/addons/web_kanban/static/src/js/kanban_column.js
index f848c266944..b4fa2e8d010 100644
--- a/addons/web_kanban/static/src/js/kanban_column.js
+++ b/addons/web_kanban/static/src/js/kanban_column.js
@@ -65,9 +65,10 @@ var KanbanColumn = Widget.extend({
         });
 
         var self = this;
-        if (group_data.options && group_data.options.group_by_tooltip) {
-            this.tooltip_info = _.map(group_data.options.group_by_tooltip, function (key, value, list) {
-                return (self.values && self.values[value] && "<div>" +key + "<br>" + self.values[value] + "</div>") || '';
+        if (group_data.options && group_data.options.group_by_tooltip && this.values) {
+            this.tooltip_info = _.map(group_data.options.group_by_tooltip, function (key, value) {
+                if (!self.values[value]) { return ''; }
+                return $('<div>').text(key + '<br>' + self.values[value]).text();
             }).join('');
         } else {
             this.tooltip_info = "";