diff --git a/app/AccountancyModule/PaymentModule/presenters/PaymentPresenter.php b/app/AccountancyModule/PaymentModule/presenters/PaymentPresenter.php
index b56e5f50f..975dcab9e 100644
--- a/app/AccountancyModule/PaymentModule/presenters/PaymentPresenter.php
+++ b/app/AccountancyModule/PaymentModule/presenters/PaymentPresenter.php
@@ -21,6 +21,7 @@
 use App\AccountancyModule\PaymentModule\Factories\IPaymentNoteDialogFactory;
 use App\AccountancyModule\PaymentModule\Factories\IRemoveGroupDialogFactory;
 use DateTimeImmutable;
+use Model\Common\UserNotFound;
 use Model\DTO\Payment\Payment;
 use Model\DTO\Payment\Person;
 use Model\ExcelService;
@@ -250,8 +251,10 @@ public function handleComplete(int $pid): void
             $this->flashMessage('Platba byla zaplacena.');
         } catch (PaymentClosed) {
             $this->flashMessage('Tato platba už je uzavřená', 'danger');
-        } catch (InvalidOAuth $exc) {
-            $this->flashMessage($exc->getExplainedMessage(), 'danger');
+        } catch (UserNotFound) {
+            $this->flashMessage('Uživatel nebyl nalezen', 'danger');
+        } catch (PaymentNotFound) {
+            $this->flashMessage('Platba nebyla nalezena', 'danger');
         }
 
         $this->redirect('this');
diff --git a/app/model/Bank/BankService.php b/app/model/Bank/BankService.php
index 1164d0f2f..5cb7a1567 100644
--- a/app/model/Bank/BankService.php
+++ b/app/model/Bank/BankService.php
@@ -14,6 +14,7 @@
 use Model\Payment\Group;
 use Model\Payment\Payment;
 use Model\Payment\Payment\Transaction;
+use Model\Payment\PaymentClosed;
 use Model\Payment\Repositories\IBankAccountRepository;
 use Model\Payment\Repositories\IGroupRepository;
 use Model\Payment\Repositories\IPaymentRepository;
@@ -141,6 +142,8 @@ private function resolvePairingIntervalStart(array $groups): ChronosDate
      * @param Payment[]         $payments
      *
      * @return Payment[]
+     *
+     * @throws PaymentClosed
      */
     private function markPaymentsAsComplete(array $transactions, array $payments): array
     {
diff --git a/app/model/Payment/Payment.php b/app/model/Payment/Payment.php
index 7c7429090..e71c928a1 100644
--- a/app/model/Payment/Payment.php
+++ b/app/model/Payment/Payment.php
@@ -163,6 +163,7 @@ public function update(
         $this->amount = $amount;
     }
 
+    /** @throws PaymentClosed */
     private function complete(DateTimeImmutable $time): void
     {
         $this->checkNotClosed();
@@ -170,6 +171,7 @@ private function complete(DateTimeImmutable $time): void
         $this->closedAt = $time;
     }
 
+    /** @throws PaymentClosed */
     public function completeManually(DateTimeImmutable $time, string $userFullName): void
     {
         $this->complete($time);
@@ -177,6 +179,7 @@ public function completeManually(DateTimeImmutable $time, string $userFullName):
         $this->raise(new PaymentWasCompleted($this->id));
     }
 
+    /** @throws PaymentClosed */
     public function pairWithTransaction(DateTimeImmutable $time, Transaction $transaction): void
     {
         $this->complete($time);
diff --git a/app/model/Payment/PaymentService.php b/app/model/Payment/PaymentService.php
index 6422ac5e1..9a61ca4ea 100644
--- a/app/model/Payment/PaymentService.php
+++ b/app/model/Payment/PaymentService.php
@@ -9,6 +9,7 @@
 use InvalidArgumentException;
 use Model\Common\Repositories\IParticipantRepository;
 use Model\Common\Repositories\IUserRepository;
+use Model\Common\UserNotFound;
 use model\DTO\Participant\PaymentDetails;
 use Model\DTO\Payment as DTO;
 use model\Event\Exception\CampInvitationNotFound;
@@ -24,6 +25,7 @@
 use Model\Payment\MissingVariableSymbol;
 use Model\Payment\Payment;
 use Model\Payment\Payment\State;
+use Model\Payment\PaymentClosed;
 use Model\Payment\PaymentNotFound;
 use Model\Payment\Repositories\IBankAccountRepository;
 use Model\Payment\Repositories\IGroupRepository;
@@ -80,6 +82,11 @@ public function cancelPayment(int $pid): void
         $this->payments->save($payment);
     }
 
+    /**
+     * @throws PaymentClosed
+     * @throws UserNotFound
+     * @throws PaymentNotFound
+     */
     public function completePayment(int $id): void
     {
         $payment = $this->payments->find($id);