diff --git a/flask/helpers.py b/flask/helpers.py
index 18502a53..71bc3142 100644
--- a/flask/helpers.py
+++ b/flask/helpers.py
@@ -118,35 +118,9 @@ def jsonify(*args, **kwargs):
     information about this, have a look at :ref:`json-security`.
 
     .. versionadded:: 0.2
-
-    .. versionadded:: 0.9
-        If the ``padded`` argument is true, the JSON object will be padded
-        for JSONP calls and the response mimetype will be changed to
-        ``application/javascript``. By default, the request arguments ``callback``
-        and ``jsonp`` will be used as the name for the callback function.
-        This will work with jQuery and most other JavaScript libraries
-        by default.
-
-        If the ``padded`` argument is a string, jsonify will look for
-        the request argument with the same name and use that value as the
-        callback-function name.
     """
     if __debug__:
         _assert_have_json()
-
-    padded = kwargs.get('padded', False)
-    if 'padded' in kwargs:
-        del kwargs['padded']
-
-    if padded:
-        if isinstance(padded, str):
-            callback = request.args.get(padded) or 'jsonp'
-        else:
-            callback = request.args.get('callback') or \
-                       request.args.get('jsonp') or 'jsonp'
-        json_str = json.dumps(dict(*args, **kwargs), indent=None)
-        content = str(callback) + "(" + json_str + ")"
-        return current_app.response_class(content, mimetype='application/javascript')
     return current_app.response_class(json.dumps(dict(*args, **kwargs),
         indent=None if request.is_xhr else 2), mimetype='application/json')
 
diff --git a/flask/testsuite/helpers.py b/flask/testsuite/helpers.py
index a0e60aac..816f6cd8 100644
--- a/flask/testsuite/helpers.py
+++ b/flask/testsuite/helpers.py
@@ -73,28 +73,11 @@ class JSONTestCase(FlaskTestCase):
         @app.route('/dict')
         def return_dict():
             return flask.jsonify(d)
-        @app.route("/unpadded")
-        def return_padded_false():
-            return flask.jsonify(d, padded=False)
-        @app.route("/padded")
-        def return_padded_true():
-            return flask.jsonify(d, padded=True)
-        @app.route("/padded_custom")
-        def return_padded_json_custom_callback():
-            return flask.jsonify(d, padded='my_func_name')
         c = app.test_client()
-        for url in '/kw', '/dict', '/unpadded':
+        for url in '/kw', '/dict':
             rv = c.get(url)
             self.assert_equal(rv.mimetype, 'application/json')
             self.assert_equal(flask.json.loads(rv.data), d)
-        for get_arg in 'callback=funcName', 'jsonp=funcName':
-            rv = c.get('/padded?' + get_arg)
-            self.assert_( rv.data.startswith("funcName(") )
-            self.assert_( rv.data.endswith(")") )
-            rv_json = rv.data.split('(')[1].split(')')[0]
-            self.assert_equal(flask.json.loads(rv_json), d)
-        rv = c.get('/padded_custom?my_func_name=funcName')
-        self.assert_( rv.data.startswith("funcName(") )
 
     def test_json_attr(self):
         app = flask.Flask(__name__)