diff --git a/system/database/drivers/mysql/mysql_forge.php b/system/database/drivers/mysql/mysql_forge.php
index 05db862..7ce4e8b 100644
--- a/system/database/drivers/mysql/mysql_forge.php
+++ b/system/database/drivers/mysql/mysql_forge.php
@@ -35,12 +35,19 @@
  */
 class CI_DB_mysql_forge extends CI_DB_forge {
 
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
 	protected $_create_database	= 'CREATE DATABASE %s CHARACTER SET %s COLLATE %s';
 
+	// --------------------------------------------------------------------
+
 	/**
 	 * Process Fields
 	 *
-	 * @param	mixed	the fields
+	 * @param	mixed	$fields
 	 * @return	string
 	 */
 	protected function _process_fields($fields)
diff --git a/system/database/drivers/mysql/mysql_utility.php b/system/database/drivers/mysql/mysql_utility.php
index bc20d25..8aa0517 100644
--- a/system/database/drivers/mysql/mysql_utility.php
+++ b/system/database/drivers/mysql/mysql_utility.php
@@ -35,14 +35,33 @@
  */
 class CI_DB_mysql_utility extends CI_DB_utility {
 
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
 	protected $_list_databases	= 'SHOW DATABASES';
-	protected $_optimize_table	= 'OPTIMIZE TABLE %s';
-	protected $_repair_table	= 'REPAIR TABLE %s';
 
 	/**
-	 * MySQL Export
+	 * OPTIMIZE TABLE statement
 	 *
-	 * @param	array	Preferences
+	 * @var	string
+	 */
+	protected $_optimize_table	= 'OPTIMIZE TABLE %s';
+
+	/**
+	 * REPAIR TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_repair_table	= 'REPAIR TABLE %s';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
 	 * @return	mixed
 	 */
 	protected function _backup($params = array())