diff --git a/config/filter.d/freeswitch.conf b/config/filter.d/freeswitch.conf
index 70a1b810..ecc4a8bd 100644
--- a/config/filter.d/freeswitch.conf
+++ b/config/filter.d/freeswitch.conf
@@ -1,6 +1,8 @@
# Fail2Ban configuration file
#
-# In freeswitch configuration:
+# Enable "log-auth-failures" on each Sofia profile to monitor
+#
+# -- this requires a high enough loglevel on your logs to save these messages.
#
# In the fail2ban jail.local file for this filter set ignoreip to the internal
# IP addresses on your LAN.