diff --git a/addons/web/static/src/js/core.js b/addons/web/static/src/js/core.js
index 49840e5aba8..896ba7d3061 100644
--- a/addons/web/static/src/js/core.js
+++ b/addons/web/static/src/js/core.js
@@ -568,19 +568,19 @@ openerp.web.Connection = openerp.web.CallbackEnabled.extend( /** @lends openerp.
         } else {
             // Indirect jsonp request
             var ifid = _.uniqueId('oe_rpc_iframe');
-            var display = options.openerp.debug ? 'block' : 'none';
+            var display = this.debug ? 'block' : 'none';
             var $iframe = $(_.str.sprintf("<iframe src='javascript:false;' name='%s' id='%s' style='display:%s'></iframe>", ifid, ifid, display));
             var $form = $('<form>')
                         .attr('method', 'POST')
                         .attr('target', ifid)
                         .attr('enctype', "multipart/form-data")
-                        .attr('action', ajax.url + '?' + $.param(data))
+                        .attr('action', ajax.url + '?jsonp=1&' + $.param(data))
                         .append($('<input type="hidden" name="r" />').attr('value', payload_str))
                         .hide()
                         .appendTo($('body'));
             var cleanUp = function() {
                 if ($iframe) {
-                    $iframe.unbind("load").attr("src", "javascript:false;").remove();
+                    $iframe.unbind("load").remove();
                 }
                 $form.remove();
             };