diff --git a/config/jail.conf b/config/jail.conf
index a0dc2369..7e6c127c 100644
--- a/config/jail.conf
+++ b/config/jail.conf
@@ -264,6 +264,8 @@ action   = iptables-multiport[name=Named, port="domain,953", protocol=tcp]
 logpath  = /var/log/named/security.log
 ignoreip = 168.192.0.1
 
+# Multiple jails, 1 per protocol, are necessary ATM:
+# see https://github.com/fail2ban/fail2ban/issues/37
 [asterisk-tcp]
 
 enabled  = false