diff --git a/etc/telegraf.conf b/etc/telegraf.conf
index d63b88e21..75010f88a 100644
--- a/etc/telegraf.conf
+++ b/etc/telegraf.conf
@@ -9053,7 +9053,7 @@
 # # Listener capable of handling KNX bus messages provided through a KNX-IP Interface.
 # [[inputs.knx_listener]]
 #   ## Type of KNX-IP interface.
-#   ## Can be either "tunnel" or "router".
+#   ## Can be either "tunnel_udp", "tunnel_tcp", "tunnel" (alias for tunnel_udp) or "router".
 #   # service_type = "tunnel"
 #
 #   ## Address of the KNX-IP interface.
diff --git a/etc/telegraf_windows.conf b/etc/telegraf_windows.conf
index 2d9b52575..01d156714 100644
--- a/etc/telegraf_windows.conf
+++ b/etc/telegraf_windows.conf
@@ -8896,7 +8896,7 @@
 # # Listener capable of handling KNX bus messages provided through a KNX-IP Interface.
 # [[inputs.knx_listener]]
 #   ## Type of KNX-IP interface.
-#   ## Can be either "tunnel" or "router".
+#   ## Can be either "tunnel_udp", "tunnel_tcp", "tunnel" (alias for tunnel_udp) or "router".
 #   # service_type = "tunnel"
 #
 #   ## Address of the KNX-IP interface.