diff --git a/lib/MailQueueHandler.php b/lib/MailQueueHandler.php
index 96ed230be..e2139ddaf 100644
--- a/lib/MailQueueHandler.php
+++ b/lib/MailQueueHandler.php
@@ -416,7 +416,7 @@ protected function sendEmailToUser($userName, $email, $lang, $timezone, $maxTime
 		} catch (\Exception $e) {
 			$this->logger->logException($e, [
 				'message' => 'Failed sending activity email to user "{user}"',
-				'user' => $user,
+				'user' => $userName,
 				'app' => 'activity',
 			]);
 			return false;