diff --git a/payment_paypal/indico_payment_paypal/controllers.py b/payment_paypal/indico_payment_paypal/controllers.py
index dba43f7..4e576f5 100644
--- a/payment_paypal/indico_payment_paypal/controllers.py
+++ b/payment_paypal/indico_payment_paypal/controllers.py
@@ -54,8 +54,7 @@ class RHPaypalIPN(RH):
             raise BadRequest
 
     def _process(self):
-        if not self._verify_business():
-            return
+        self._verify_business()
         verify_params = list(chain(IPN_VERIFY_EXTRA_PARAMS, request.form.iteritems()))
         result = requests.post(current_plugin.settings.get('url'), data=verify_params).text
         if result != 'VERIFIED':
diff --git a/payment_paypal/tests/controllers_test.py b/payment_paypal/tests/controllers_test.py
index be92803..2a56bec 100644
--- a/payment_paypal/tests/controllers_test.py
+++ b/payment_paypal/tests/controllers_test.py
@@ -75,7 +75,6 @@ def test_ipn_is_transaction_duplicated(mocker, txn_id, payment_status, expected)
 
 @pytest.mark.usefixtures('db', 'request_context')
 @pytest.mark.parametrize('fail', (
-    'business',
     'verify',
     'dup_txn',
     'fail',
@@ -89,7 +88,6 @@ def test_ipn_process(mocker, fail):
     post = mocker.patch('indico_payment_paypal.controllers.requests.post')
     post.return_value.text = 'INVALID' if fail == 'verify' else 'VERIFIED'
     rh = RHPaypalIPN()
-    rh._verify_business = lambda: fail != 'business'
     rh._is_transaction_duplicated = lambda: fail == 'dup_txn'
     rh.event = MagicMock(id=1)
     rh.registrant = MagicMock()
@@ -99,8 +97,8 @@ def test_ipn_process(mocker, fail):
     request.view_args = {'confId': rh.event.id}
     request.args = {'registrantId': '1'}
     request.form = {'payment_status': payment_status, 'txn_id': '12345', 'mc_gross': amount,
-                    'mc_currency': 'EUR'}
+                    'mc_currency': 'EUR', 'business': 'foo@bar.com'}
     with PaypalPaymentPlugin.instance.plugin_context():
         rh._process()
-        assert post.called == (fail != 'business')
+        assert post.called
         assert rt.called == (fail is None)