diff --git a/Configuration.md b/Configuration.md
index c3ae836..f17e4e1 100644
--- a/Configuration.md
+++ b/Configuration.md
@@ -13,7 +13,9 @@ 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.*`.
 
-**Note:** The above list may be incomplete. To view all available AUDIT system variables run:
+**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.
+* The above list may be incomplete. To view all available AUDIT system variables run:
 
     mysqld --help --verbose