diff --git a/addons/web/static/src/js/pyeval.js b/addons/web/static/src/js/pyeval.js
index 80aac87ecbe..8b56d17c14e 100644
--- a/addons/web/static/src/js/pyeval.js
+++ b/addons/web/static/src/js/pyeval.js
@@ -109,27 +109,6 @@ openerp.web.pyeval = function (instance) {
         }
     });
 
-    datetime.timedelta = py.type('timedelta', null, {
-        __init__: function () {
-            var zero = py.float.fromJSON(0);
-            var args = py.PY_parseArgs(arguments,
-                [['days', zero], ['seconds', zero], ['microseconds', zero],
-                 ['milliseconds', zero], ['minutes', zero], ['hours', zero],
-                 ['weeks', zero]]);
-            var ms = args['microseconds'].toJSON()
-                   + 1000 * args['milliseconds'].toJSON();
-            this.milliseconds = ms % 1000000;
-            var sec = Math.floor(ms / 1000000)
-                    + args['seconds'].toJSON()
-                    + 60 * args['minutes'].toJSON()
-                    + 3600 * args['hours'].toJSON();
-            this.seconds = sec % 86400;
-            this.days = Math.floor(sec / 86400)
-                      + args['days'].toJSON()
-                      + 7 * args['weeks'].toJSON();
-        }
-    });
-
     var time = py.PY_call(py.object);
     time.strftime = py.PY_def.fromJSON(function () {
         // FIXME: needs PY_getattr
diff --git a/addons/web/static/test/evals.js b/addons/web/static/test/evals.js
index 3c3bface529..72c4cd7323a 100644
--- a/addons/web/static/test/evals.js
+++ b/addons/web/static/test/evals.js
@@ -6,25 +6,6 @@ $(document).ready(function () {
             openerp = window.openerp.testing.instanceFor('coresetup');
             openerp.session.uid = 42;
         }
-    });
-    test('datetime.datetime', function () {
-    });
-    test('datetime.date', function () {
-
-    });
-    test('datetime.timedelta', function () {
-        var d = new Date();
-        d.setUTCDate(d.getUTCDate() - 15);
-        strictEqual(
-            py.eval("(datetime.date.today()" +
-                    "- datetime.timedelta(days=15))" +
-                    ".strftime('%Y-%m-%d')", openerp.web.pyeval.context()),
-            _.str.strftime('%04d-%02d-%02d',
-                d.getUTCFullYear(), d.getUTCMonth() + 1, d.getUTCDate()));
-
-    });
-    test('relativedelta', function () {
-
     });
     test('strftime', function () {
         var d = new Date();