diff --git a/addons/web_gantt/static/src/js/gantt.js b/addons/web_gantt/static/src/js/gantt.js
index 22e98807074..77bb6df4397 100644
--- a/addons/web_gantt/static/src/js/gantt.js
+++ b/addons/web_gantt/static/src/js/gantt.js
@@ -525,12 +525,17 @@ openerp.web_gantt.GanttView = openerp.web.View.extend({
         if (groupbys.length) {
             this.group_by = groupbys;
         }
-        
+        var fields = _.compact(_.map(this.fields_view.arch.attrs,function(value,key) {
+            if (key != 'string' && key != 'default_group_by') {
+                return value || '';
+            }
+        }));
+        fields = _.uniq(fields.concat(_.keys(this.fields), this.text, this.group_by));
         $.when(this.has_been_loaded).then(function() {
-                self.dataset.read_slice([], {
+                self.dataset.read_slice(fields, {
                     domain: domains,
                     context: contexts
-                }).done(function(projects){
+                }).done(function(projects) {
                     self.on_project_loaded(projects);
                 });
         });