diff --git a/web_import_models_with_inherits/static/src/js/data_import.js b/web_import_models_with_inherits/static/src/js/data_import.js
index 06034a88..1a958631 100644
--- a/web_import_models_with_inherits/static/src/js/data_import.js
+++ b/web_import_models_with_inherits/static/src/js/data_import.js
@@ -7,7 +7,7 @@
  */
    
 openerp.web_import_models_with_inherits = function(openerp) {
-    openerp.web.DataImport = openerp.web.DataImport.extend({
+    openerp.web.DataImport.include({
         /* At widget start, tag on to the 'ready' queue with a function to
            add the model's _inherits fields to the list that contains all
            fields that need not be provided by the import file even if they