diff --git a/addons/web/static/src/js/search.js b/addons/web/static/src/js/search.js
index 13abda0c2f4..e84a9472ff3 100644
--- a/addons/web/static/src/js/search.js
+++ b/addons/web/static/src/js/search.js
@@ -1899,7 +1899,7 @@ instance.web.search.ExtendedSearchProposition = instance.web.Widget.extend(/** @
         this._super(parent);
         this.fields = _(fields).chain()
             .map(function(val, key) { return _.extend({}, val, {'name': key}); })
-            .filter(function (field) { return !field.deprecated && (typeof field.store === 'undefined' || field.store || field.funct_search); })
+            .filter(function (field) { return !field.deprecated && (field.store === void 0 || field.store || field.fnct_search); })
             .sortBy(function(field) {return field.string;})
             .value();
         this.attrs = {_: _, fields: this.fields, selected: null};