diff --git a/payment_donation.module b/payment_donation.module
index d6a60c4..f862084 100644
--- a/payment_donation.module
+++ b/payment_donation.module
@@ -181,6 +181,7 @@ function payment_donation_form_submit(array $form, array &$form_state) {
  * Implements Payment::finish_callback.
  */
 function payment_donation_finish(Payment $payment) {
+  $view = '';
   if (payment_access('view', $payment)) {
     $view = ' ' . l(t('View payment'), 'payment/' . $payment->pid) . '.';
   }