diff --git a/app/Http/Controllers/PublicClientController.php b/app/Http/Controllers/PublicClientController.php
index 755dbb1ca8..b9155c6642 100644
--- a/app/Http/Controllers/PublicClientController.php
+++ b/app/Http/Controllers/PublicClientController.php
@@ -320,7 +320,7 @@ class PublicClientController extends BaseController
         $payments = $this->paymentRepo->findForContact($invitation->contact->id, Input::get('sSearch'));
 
         return Datatable::query($payments)
-                ->addColumn('invoice_number', function ($model) { return $model->invitation_key ? link_to('/view/'.$model->invitation_key, $model->invoice_number) : $model->invoice_number; })->toHtml()
+                ->addColumn('invoice_number', function ($model) { return $model->invitation_key ? link_to('/view/'.$model->invitation_key, $model->invoice_number)->toHtml() : $model->invoice_number; })
                 ->addColumn('transaction_reference', function ($model) { return $model->transaction_reference ? $model->transaction_reference : '<i>Manual entry</i>'; })
                 ->addColumn('payment_type', function ($model) { return $model->payment_type ? $model->payment_type : ($model->account_gateway_id ? '<i>Online payment</i>' : ''); })
                 ->addColumn('amount', function ($model) { return Utils::formatMoney($model->amount, $model->currency_id, $model->country_id); })