diff --git a/addons/web/static/src/js/data.js b/addons/web/static/src/js/data.js
index 4a0807a727a..78e3001d746 100644
--- a/addons/web/static/src/js/data.js
+++ b/addons/web/static/src/js/data.js
@@ -130,7 +130,7 @@ instance.web.Query = instance.web.Class.extend({
             return null;
         }
         var raw_fields = _.map(grouping.concat(this._fields || []), function (field) {
-            return (_.contains(field, ':')) ? field.split(':')[0] : field;
+            return field.split(':')[0];
         });
 
         var self = this;