diff --git a/samples/directDebit/add.php b/samples/directDebit/add.php
index 58bfbe25..3341ba29 100644
--- a/samples/directDebit/add.php
+++ b/samples/directDebit/add.php
@@ -9,11 +9,11 @@
         
         // optional
         'bankaccountBic' => 'RABONL2U',
-        'exchangeUrl' => 'http://requestb.in/th07swth',
+//        'exchangeUrl' => 'http://path_to_your_exchange/file.php',
         'processDate' => new DateTime('tomorrow'),
         'description' => 'De omschrijving',
         'ipAddress' => '192.168.20.123',
-        'email' => 'naam@emai.com',
+        'email' => 'naam@email.com',
         'promotorId' => '123456789',
         'tool' => 'sdk',
         'info' => 'info',
diff --git a/samples/directDebit/mandate/add.php b/samples/directDebit/mandate/add.php
index d11d2d49..600857ed 100644
--- a/samples/directDebit/mandate/add.php
+++ b/samples/directDebit/mandate/add.php
@@ -10,7 +10,7 @@
         // optional
         'bankaccountBic' => 'RABONL2U',
         'processDate' => new DateTime('tomorrow'),
-        'exchangeUrl' => 'http://requestb.in/th07swth',
+//        'exchangeUrl' => 'http://path_to_your_exchange/file.php',
         'description' => 'De omschrijving',
         'ipAddress' => '192.168.20.123',
         'email' => 'naam@email.com',
diff --git a/samples/directDebit/recurring/add.php b/samples/directDebit/recurring/add.php
index 984d65ea..cd16b08d 100644
--- a/samples/directDebit/recurring/add.php
+++ b/samples/directDebit/recurring/add.php
@@ -13,7 +13,7 @@
         'processDate' => '08-07-2016',
 
 //         optional
-        'exchangeUrl' => 'http://requestb.in/th07swth',
+//        'exchangeUrl' => 'http://path_to_your_exchange/file.php',
         'description' => 'De omschrijving',
         'ipAddress' => '192.168.20.123',
         'email' => 'naam@email.com',