diff --git a/addons/web/static/src/js/core/ajax.js b/addons/web/static/src/js/core/ajax.js
index 67b47add1e2..509126498bc 100644
--- a/addons/web/static/src/js/core/ajax.js
+++ b/addons/web/static/src/js/core/ajax.js
@@ -45,7 +45,6 @@ function genericJsonRpc (fct_name, params, settings, fct) {
         var def = $.Deferred();
         return def.reject.apply(def, ["communication"].concat(_.toArray(arguments)));
     });
-    // FIXME: jsonp?
     deferred.abort = function () {
         deferred.reject({message: "XmlHttpRequestError abort"}, $.Event('abort'));
         if (xhr.abort) {
@@ -106,78 +105,6 @@ function jsonRpc(url, fct_name, params, settings) {
     });
 }
 
-function jsonpRpc(url, fct_name, params, settings) {
-    settings = settings || {};
-    return genericJsonRpc(fct_name, params, settings, function(data) {
-        var payload_str = JSON.stringify(data, time.date_to_utc);
-        var payload_url = $.param({r:payload_str});
-        var force2step = settings.force2step || false;
-        delete settings.force2step;
-        if (payload_url.length < 2000 && ! force2step) {
-            return $.ajax(url, _.extend({}, settings, {
-                url: url,
-                dataType: 'jsonp',
-                jsonp: 'jsonp',
-                type: 'GET',
-                cache: false,
-                data: {r: payload_str}
-            }));
-        } else {
-            var args = {id: data.id};
-            var ifid = _.uniqueId('oe_rpc_iframe');
-            var html = "<iframe src='javascript:false;' name='" + ifid + "' id='" + ifid + "' style='display:none'></iframe>";
-            var $iframe = $(html);
-            var nurl = 'jsonp=1&' + $.param(args);
-            nurl = url.indexOf("?") !== -1 ? url + "&" + nurl : url + "?" + nurl;
-            var $form = $('<form>')
-                        .attr('method', 'POST')
-                        .attr('target', ifid)
-                        .attr('enctype', "multipart/form-data")
-                        .attr('action', nurl)
-                        .append($('<input type="hidden" name="r" />').attr('value', payload_str))
-                        .hide()
-                        .appendTo($('body'));
-            var cleanUp = function() {
-                if ($iframe) {
-                    $iframe.unbind("load").remove();
-                }
-                $form.remove();
-            };
-            var deferred = $.Deferred();
-            // the first bind is fired up when the iframe is added to the DOM
-            $iframe.bind('load', function() {
-                // the second bind is fired up when the result of the form submission is received
-                $iframe.unbind('load').bind('load', function() {
-                    $.ajax({
-                        url: url,
-                        dataType: 'jsonp',
-                        jsonp: 'jsonp',
-                        type: 'GET',
-                        cache: false,
-                        data: {id: data.id}
-                    }).always(function() {
-                        cleanUp();
-                    }).done(function() {
-                        deferred.resolve.apply(deferred, arguments);
-                    }).fail(function() {
-                        deferred.reject.apply(deferred, arguments);
-                    });
-                });
-                // now that the iframe can receive data, we fill and submit the form
-                $form.submit();
-            });
-            // append the iframe to the DOM (will trigger the first load)
-            $form.after($iframe);
-            if (settings.timeout) {
-                realSetTimeout(function() {
-                    deferred.reject({});
-                }, settings.timeout);
-            }
-            return deferred;
-        }
-    });
-}
-
 // helper function to make a rpc with a function name hardcoded to 'call'
 function rpc(url, params, settings) {
     return jsonRpc(url, 'call', params, settings);
@@ -310,7 +237,7 @@ function get_file(options) {
         xhr.open('POST', options.url);
         data = new FormData();
         _.each(options.data || {}, function (v, k) {
-            data.append(k, v)
+            data.append(k, v);
         });
     }
     data.append('token', 'dummy-because-api-expects-one');
@@ -358,7 +285,7 @@ function get_file(options) {
                         name: String(xhr.status),
                         title: nodes.length > 0 ? nodes[0].textContent : '',
                     }
-                }
+                };
             }
             options.error(err);
         };
@@ -373,7 +300,7 @@ function get_file(options) {
         }
     };
     if (options.complete) {
-        xhr.onloadend = function () { options.complete(); }
+        xhr.onloadend = function () { options.complete(); };
     }
 
     xhr.send(data);
@@ -594,7 +521,6 @@ function loadLibs (libs) {
 
 var ajax = {
     jsonRpc: jsonRpc,
-    jsonpRpc: jsonpRpc,
     rpc: rpc,
     loadCSS: loadCSS,
     loadJS: loadJS,
diff --git a/addons/web/static/src/js/core/session.js b/addons/web/static/src/js/core/session.js
index a9479d5a690..7212b8ad76e 100644
--- a/addons/web/static/src/js/core/session.js
+++ b/addons/web/static/src/js/core/session.js
@@ -308,17 +308,11 @@ var Session = core.Class.extend(mixins.EventDispatcherMixin, {
             _.extend(options, url);
             url = url.url;
         }
-        var fct;
-        if (self.origin_server) {
-            fct = ajax.jsonRpc;
-        } else if (self.use_cors) {
-            fct = ajax.jsonRpc;
-            url = self.url(url, null);
-        } else {
-            fct = ajax.jsonpRpc;
+        if (self.use_cors) {
             url = self.url(url, null);
         }
-        return fct(url, "call", params, options);
+
+        return ajax.jsonRpc(url, "call", params, options);
     },
     url: function (path, params) {
         params = _.extend(params || {});
diff --git a/addons/website_sale/static/src/js/website_sale_tour_shop_customize.js b/addons/website_sale/static/src/js/website_sale_tour_shop_customize.js
index 009eb44b436..da48b761560 100644
--- a/addons/website_sale/static/src/js/website_sale_tour_shop_customize.js
+++ b/addons/website_sale/static/src/js/website_sale_tour_shop_customize.js
@@ -47,8 +47,8 @@ odoo.define('website_sale.tour_shop_customize', function (require) {
                         args: ['product.group_product_variant', false],
                         kwargs: {}
                     };
-                    ajax.jsonpRpc('/web/dataset/call_kw', 'call', get_group_payload).then(function(group_id) {
-                        ajax.jsonpRpc('/web/dataset/call_kw', 'call', {
+                    ajax.jsonRpc('/web/dataset/call_kw', 'call', get_group_payload).then(function(group_id) {
+                        ajax.jsonRpc('/web/dataset/call_kw', 'call', {
                             model: 'res.groups',
                             method: 'write',
                             args: [group_id, {'users': [[4, 1]]}],
diff --git a/odoo/http.py b/odoo/http.py
index 15534b41bc8..886fecc48ba 100644
--- a/odoo/http.py
+++ b/odoo/http.py
@@ -579,34 +579,14 @@ class JsonRequest(WebRequest):
     def __init__(self, *args):
         super(JsonRequest, self).__init__(*args)
 
-        self.jsonp_handler = None
         self.params = {}
 
         args = self.httprequest.args
-        jsonp = args.get('jsonp')
-        self.jsonp = jsonp
         request = None
         request_id = args.get('id')
 
-        if jsonp and self.httprequest.method == 'POST':
-            # jsonp 2 steps step1 POST: save call
-            def handler():
-                self.session['jsonp_request_%s' % (request_id,)] = self.httprequest.form['r']
-                self.session.modified = True
-                headers=[('Content-Type', 'text/plain; charset=utf-8')]
-                r = werkzeug.wrappers.Response(request_id, headers=headers)
-                return r
-            self.jsonp_handler = handler
-            return
-        elif jsonp and args.get('r'):
-            # jsonp method GET
-            request = args.get('r')
-        elif jsonp and request_id:
-            # jsonp 2 steps step2 GET: run and return result
-            request = self.session.pop('jsonp_request_%s' % (request_id,), '{}')
-        else:
-            # regular jsonrpc2
-            request = self.httprequest.get_data().decode(self.httprequest.charset)
+        # regular jsonrpc2
+        request = self.httprequest.get_data().decode(self.httprequest.charset)
 
         # Read POST content or POST Form Data named "request"
         try:
@@ -630,16 +610,8 @@ class JsonRequest(WebRequest):
         if result is not None:
             response['result'] = result
 
-        if self.jsonp:
-            # If we use jsonp, that's mean we are called from another host
-            # Some browser (IE and Safari) do no allow third party cookies
-            # We need then to manage http sessions manually.
-            response['session_id'] = self.session.sid
-            mime = 'application/javascript'
-            body = "%s(%s);" % (self.jsonp, json.dumps(response, default=date_utils.json_default))
-        else:
-            mime = 'application/json'
-            body = json.dumps(response, default=date_utils.json_default)
+        mime = 'application/json'
+        body = json.dumps(response, default=date_utils.json_default)
 
         return Response(
             body, status=error and error.pop('http_status', 200) or 200,
@@ -674,8 +646,6 @@ class JsonRequest(WebRequest):
             return self._json_response(error=error)
 
     def dispatch(self):
-        if self.jsonp_handler:
-            return self.jsonp_handler()
         try:
             rpc_request_flag = rpc_request.isEnabledFor(logging.DEBUG)
             rpc_response_flag = rpc_response.isEnabledFor(logging.DEBUG)
@@ -1388,8 +1358,6 @@ class Root(object):
 
     def get_request(self, httprequest):
         # deduce type of request
-        if httprequest.args.get('jsonp'):
-            return JsonRequest(httprequest)
         if httprequest.mimetype in ("application/json", "application/json-rpc"):
             return JsonRequest(httprequest)
         else: