diff --git a/lib/Notification/Notifier.php b/lib/Notification/Notifier.php
index 9f7457990..63a886289 100644
--- a/lib/Notification/Notifier.php
+++ b/lib/Notification/Notifier.php
@@ -20,6 +20,7 @@
 use OCA\Circles\Exceptions\MemberNotFoundException;
 use OCA\Circles\Exceptions\RequestBuilderException;
 use OCA\Circles\Exceptions\SingleCircleNotFoundException;
+use OCA\Circles\Model\Member;
 use OCA\Circles\Model\Probes\CircleProbe;
 use OCA\Circles\Service\ConfigService;
 use OCA\Circles\Service\FederatedUserService;
@@ -153,6 +154,7 @@ public function prepare(INotification $notification, string $languageCode): INot
 	 * @throws InvalidIdException
 	 * @throws SingleCircleNotFoundException
 	 * @throws UnknownNotificationException
+	 * @throws AlreadyProcessedException
 	 */
 	private function prepareMemberNotification(INotification $notification) {
 		$this->federatedUserService->initCurrentUser($notification->getUser());
@@ -167,6 +169,10 @@ private function prepareMemberNotification(INotification $notification) {
 			$probe
 		);
 
+		if ($notification->getSubject() === 'joinRequest' && $member->getStatus() !== Member::STATUS_REQUEST) {
+			throw new AlreadyProcessedException();
+		}
+
 		switch ($notification->getSubject()) {
 			case 'memberAdd':
 				$subject = $this->l10n->t(