diff --git a/contrib/etc/ebusd/mqtt-hassio.cfg b/contrib/etc/ebusd/mqtt-hassio.cfg
index 4dc6e623..1082e57c 100644
--- a/contrib/etc/ebusd/mqtt-hassio.cfg
+++ b/contrib/etc/ebusd/mqtt-hassio.cfg
@@ -116,6 +116,8 @@ filter-level = ^$
 # include only messages having the specified direction ("r", "w", "u", or "uw". partial match, alternatives and wildcard supported).
 # HA integration: writable messages excluded for now
 filter-direction = r|u
+# HA integration: for including writable messages, use this line or overwrite with '--mqttvar=filter-direction=r|u|^w'.
+#filter-direction = r|u|^w
 # include only fields having the specified name (partial match, alternatives and wildcard supported).
 #filter-field =
 # exclude fields having the specified name (partial match, alternatives and wildcard supported).