diff --git a/app/Models/Gateway.php b/app/Models/Gateway.php
index 1ea05337b475..c8fd30432902 100644
--- a/app/Models/Gateway.php
+++ b/app/Models/Gateway.php
@@ -162,6 +162,10 @@ class Gateway extends Eloquent
      */
     public function getHelp()
     {
+        if ($this->id == GATEWAY_PAYFAST) {
+            return trans('texts.gateway_help_' . $this->id);
+        }
+
         $link = '';
 
         if ($this->id == GATEWAY_AUTHORIZE_NET) {
diff --git a/app/Ninja/PaymentDrivers/PayFastPaymentDriver.php b/app/Ninja/PaymentDrivers/PayFastPaymentDriver.php
index 6016afe39458..8d2e936fa253 100644
--- a/app/Ninja/PaymentDrivers/PayFastPaymentDriver.php
+++ b/app/Ninja/PaymentDrivers/PayFastPaymentDriver.php
@@ -8,6 +8,14 @@ class PayFastPaymentDriver extends BasePaymentDriver
 {
     protected $transactionReferenceParam = 'm_payment_id';
 
+    protected function paymentDetails($paymentMethod = false)
+    {
+        $data = parent::paymentDetails();
+        $data['notifyUrl'] = $this->invitation->getLink('complete', true);
+
+        return $data;
+    }
+
     public function completeOffsitePurchase($input)
     {
         parent::completeOffsitePurchase([
diff --git a/resources/lang/en/texts.php b/resources/lang/en/texts.php
index c1e3d52f152f..840b63a24971 100644
--- a/resources/lang/en/texts.php
+++ b/resources/lang/en/texts.php
@@ -2505,6 +2505,7 @@ $LANG = array(
     'videos' => 'Videos',
     'video' => 'Video',
     'return_to_invoice' => 'Return to Invoice',
+    'gateway_help_13' => 'To use ITN leave the PDT Key field blank.',
 
 );