diff --git a/etc/alternc/templates/proftpd/proftpd.conf b/etc/alternc/templates/proftpd/proftpd.conf
index b390655c..1bf054c9 100644
--- a/etc/alternc/templates/proftpd/proftpd.conf
+++ b/etc/alternc/templates/proftpd/proftpd.conf
@@ -124,7 +124,11 @@ RLimitChroot off
 <IfModule mod_tls.c>
        TLSEngine on
        TLSLog /var/log/proftpd/tls.log
-       TLSProtocol TLSv1
+       # TLSv1.3 has bugs before ProFTPd 1.3.6d and 1.3.7
+       #TLSProtocol TLSv1.2 TLSv1.3
+       TLSProtocol TLSv1.2
+       # For old clients
+       #TLSProtocol TLSv1 TLSv1.1 TLSv1.2
 
        # Are clients required to use FTP over TLS when talking to this server?
        TLSRequired off