diff --git a/src/Mailer/Mailer.php b/src/Mailer/Mailer.php
index 8f43841086..bde73bd04d 100644
--- a/src/Mailer/Mailer.php
+++ b/src/Mailer/Mailer.php
@@ -340,8 +340,8 @@ public static function errorMail(): void
 
         if ($mail->Send()) {
             // Update configuration only if email was sent successfully
-            Core::getConfig('phpmailer_last_errors', $currentErrorsHash);
-            Core::getConfig('phpmailer_last_log_file_send_time', time());
+            Core::setConfig('phpmailer_last_errors', $currentErrorsHash);
+            Core::setConfig('phpmailer_last_log_file_send_time', time());
         }
     }