diff --git a/Configuration.md b/Configuration.md
index 7dde0c9..1a25e5a 100644
--- a/Configuration.md
+++ b/Configuration.md
@@ -14,6 +14,7 @@ Available AUDIT Plugin system varaibles:
 * **audit_record_cmds**: Comma separated list of commands to log to the audit trail. For example: `insert,update,delete`.
 * **audit_record_objs**: Comma separated list of objects (tables) to log to the audit trail. Table name should be specified as: `database.table`. Wild cards are supported and it is possible to specify: `*.mytable` or `mydb.*`.
 * **audit_whitelist_users**: Comma separated list of white-listed users whose queries are not recorded.
+* **audit_header_msg**: Header message logging ON|OFF. Default value: ON. Introduced at version 1.0.6.
 
 **Notes:** 
 * When configuring boolean variables (enable/disable) in MySQL 5.1 via a configuration file (my.cnf) use 0/1 as values. For example: `audit_json_file=1`. There seems to be an issue with MySQL 5.1 where boolean configurations with `ON/OFF` values in my.cnf don't work.