diff --git a/app/Ninja/PaymentDrivers/BasePaymentDriver.php b/app/Ninja/PaymentDrivers/BasePaymentDriver.php
index 49acaf5738a1..8854363f8ab1 100644
--- a/app/Ninja/PaymentDrivers/BasePaymentDriver.php
+++ b/app/Ninja/PaymentDrivers/BasePaymentDriver.php
@@ -318,7 +318,7 @@ class BasePaymentDriver
 
         // parse the transaction reference
         if ($this->transactionReferenceParam) {
-            if (isset($this->purchaseResponse[$this->transactionReferenceParam])) {
+            if (! empty($this->purchaseResponse[$this->transactionReferenceParam])) {
                 $ref = $this->purchaseResponse[$this->transactionReferenceParam];
             } else {
                 throw new Exception($response->getMessage() ?: trans('texts.payment_error'));