diff --git a/app/Models/Gateway.php b/app/Models/Gateway.php
index e3b07061cff7..1ea05337b475 100644
--- a/app/Models/Gateway.php
+++ b/app/Models/Gateway.php
@@ -89,6 +89,8 @@ class Gateway extends Eloquent
         'developerMode',
         // Dwolla
         'sandbox',
+        // Payfast
+        'pdtKey',
     ];
 
     /**
diff --git a/resources/views/accounts/partials/payment_credentials.blade.php b/resources/views/accounts/partials/payment_credentials.blade.php
index ee1a93137572..f349be98d802 100644
--- a/resources/views/accounts/partials/payment_credentials.blade.php
+++ b/resources/views/accounts/partials/payment_credentials.blade.php
@@ -48,7 +48,9 @@
 {!! Former::populateField(GATEWAY_BRAINTREE . '_testMode', 1) !!}
 {!! Former::populateField('enable_paypal', 1) !!}
 
-
 {!! Former::populateField(GATEWAY_GOCARDLESS . '_accessToken', env('GOCARDLESS_TEST_TOKEN')) !!}
 {!! Former::populateField(GATEWAY_GOCARDLESS . '_webhookSecret', env('GOCARDLESS_TEST_WEBHOOK_SECRET')) !!}
 {!! Former::populateField(GATEWAY_GOCARDLESS . '_testMode', 1) !!}
+
+{!! Former::populateField(GATEWAY_PAYFAST . '_merchantId', env('PAYFAST_TEST_MERCHANT_ID')) !!}
+{!! Former::populateField(GATEWAY_PAYFAST . '_merchantKey', env('PAYFAST_TEST_MERCHANT_KEY')) !!}