diff --git a/app/bot.php b/app/bot.php
index 8798761..0c3753c 100644
--- a/app/bot.php
+++ b/app/bot.php
@@ -1345,7 +1345,7 @@ class Bot
             case 'letsencrypt':
                 $out[] = 'Install certificate:';
                 $this->update($this->input['chat'], $this->input['message_id'], implode("\n", $out));
-                exec("certbot certonly --force-renew --preferred-chain 'ISRG Root X1' -n --agree-tos --email mail@{$conf['domain']} -d {$conf['domain']} -d oc.{$conf['domain']} --webroot -w /certs/ --logs-dir /logs 2>&1", $out, $code);
+                exec("certbot certonly --force-renew --preferred-chain 'ISRG Root X1' -n --agree-tos --email mail@{$conf['domain']} -d {$conf['domain']} -d oc.{$conf['domain']} --webroot -w /certs/ --logs-dir /logs --max-log-backups 0 2>&1", $out, $code);
                 if ($code > 0) {
                     $this->send($this->input['chat'], "ERROR\n" . implode("\n", $out));
                     break;