diff --git a/addons/payment_paypal/controllers/main.py b/addons/payment_paypal/controllers/main.py
index 7f9ce75986d..f0bd3bb04ae 100644
--- a/addons/payment_paypal/controllers/main.py
+++ b/addons/payment_paypal/controllers/main.py
@@ -24,18 +24,33 @@ class PaypalController(http.Controller):
         """ Extract the return URL from the data coming from paypal. """
         return_url = post.pop('return_url', '')
         if not return_url:
-            custom = json.loads(post.pop('custom', False) or '{}')
+            custom = json.loads(post.pop('custom', False) or post.pop('cm', False) or '{}')
             return_url = custom.get('return_url', '/')
         return return_url
 
+    def _parse_pdt_response(self, response):
+        """ Parse a text reponse for a PDT verification .
+
+            :param response str: text response, structured in the following way:
+                STATUS\nkey1=value1\nkey2=value2...\n
+            :rtype tuple(str, dict)
+            :return: tuple containing the STATUS str and the key/value pairs
+                     parsed as a dict
+        """
+        lines = filter(None, response.split('\n'))
+        status = lines.pop(0)
+        pdt_post = dict(line.split('=', 1) for line in lines)
+        return status, pdt_post
+
     def paypal_validate_data(self, **post):
         """ Paypal IPN: three steps validation to ensure data correctness
 
          - step 1: return an empty HTTP 200 response -> will be done at the end
            by returning ''
          - step 2: POST the complete, unaltered message back to Paypal (preceded
-           by cmd=_notify-validate), with same encoding
-         - step 3: paypal send either VERIFIED or INVALID (single word)
+           by cmd=_notify-validate or _notify-synch for PDT), with same encoding
+         - step 3: paypal send either VERIFIED or INVALID (single word) for IPN
+                   or SUCCESS or FAIL (+ data) for PDT
 
         Once data is validated, process it. """
         res = False
@@ -47,18 +62,26 @@ class PaypalController(http.Controller):
             tx_ids = request.registry['payment.transaction'].search(cr, uid, [('reference', '=', reference)], context=context)
             if tx_ids:
                 tx = request.registry['payment.transaction'].browse(cr, uid, tx_ids[0], context=context)
+        pdt_request = bool(new_post.get('amt'))  # check for spefific pdt param
+        if pdt_request:
+            # this means we are in PDT instead of DPN like before
+            # fetch the PDT token
+            new_post['at'] = request.registry['ir.config_parameter'].get_param(cr, SUPERUSER_ID, 'payment_paypal.pdt_token')
+            new_post['cmd'] = '_notify-synch'  # command is different in PDT than IPN/DPN
         paypal_urls = request.registry['payment.acquirer']._get_paypal_urls(cr, uid, tx and tx.acquirer_id and tx.acquirer_id.environment or 'prod', context=context)
         validate_url = paypal_urls['paypal_form_url']
         urequest = urllib2.Request(validate_url, werkzeug.url_encode(new_post))
         uopen = urllib2.urlopen(urequest)
         resp = uopen.read()
-        if resp == 'VERIFIED':
+        if pdt_request:
+            resp, post = self._parse_pdt_response(resp)
+        if resp == 'VERIFIED' or pdt_request and resp == 'SUCCESS':
             _logger.info('Paypal: validated data')
             res = request.registry['payment.transaction'].form_feedback(cr, SUPERUSER_ID, post, 'paypal', context=context)
-        elif resp == 'INVALID':
-            _logger.warning('Paypal: answered INVALID on data verification')
+        elif resp == 'INVALID' or pdt_request and resp == 'FAIL':
+            _logger.warning('Paypal: answered INVALID/FAIL on data verification')
         else:
-            _logger.warning('Paypal: unrecognized paypal answer, received %s instead of VERIFIED or INVALID' % resp.text)
+            _logger.warning('Paypal: unrecognized paypal answer, received %s instead of VERIFIED/SUCCESS or INVALID/FAIL (validation: %s)' % (resp, 'PDT' if pdt_request else 'IPN/DPN'))
         return res
 
     @http.route('/payment/paypal/ipn/', type='http', auth='none', methods=['POST'])