diff --git a/app/PaymentDrivers/PayFastPaymentDriver.php b/app/PaymentDrivers/PayFastPaymentDriver.php
index 65e18e08bae6..3c346c0ed534 100644
--- a/app/PaymentDrivers/PayFastPaymentDriver.php
+++ b/app/PaymentDrivers/PayFastPaymentDriver.php
@@ -142,7 +142,7 @@ class PayFastPaymentDriver extends BaseDriver
     // }
 
 
-   public function generateSignature($data, $passPhrase = null)
+   public function generateSignature($data)
     {
         $fields = array();