diff --git a/system/database/drivers/pdo/pdo_forge.php b/system/database/drivers/pdo/pdo_forge.php
index 7fca962..87b6385 100644
--- a/system/database/drivers/pdo/pdo_forge.php
+++ b/system/database/drivers/pdo/pdo_forge.php
@@ -39,10 +39,11 @@
 	/**
 	 * Create database
 	 *
+	 * @access	private
 	 * @param	string	the database name
 	 * @return	bool
 	 */
-	public function _create_database()
+	function _create_database()
 	{
 		// PDO has no "create database" command since it's
 		// designed to connect to an existing database
@@ -58,10 +59,11 @@
 	/**
 	 * Drop database
 	 *
+	 * @access	private
 	 * @param	string	the database name
 	 * @return	bool
 	 */
-	public function _drop_database($name)
+	function _drop_database($name)
 	{
 		// PDO has no "drop database" command since it's
 		// designed to connect to an existing database
@@ -77,6 +79,7 @@
 	/**
 	 * Create Table
 	 *
+	 * @access	private
 	 * @param	string	the table name
 	 * @param	array	the fields
 	 * @param	mixed	primary key(s)
@@ -84,7 +87,7 @@
 	 * @param	boolean	should 'IF NOT EXISTS' be added to the SQL
 	 * @return	bool
 	 */
-	public function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists)
+	function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists)
 	{
 		$sql = 'CREATE TABLE ';
 
@@ -188,9 +191,10 @@
 	/**
 	 * Drop Table
 	 *
+	 * @access	private
 	 * @return	bool
 	 */
-	public function _drop_table($table)
+	function _drop_table($table)
 	{
 		// Not a supported PDO feature
 		if ($this->db->db_debug)
@@ -208,6 +212,7 @@
 	 * Generates a platform-specific query so that a table can be altered
 	 * Called by add_column(), drop_column(), and column_alter(),
 	 *
+	 * @access	private
 	 * @param	string	the ALTER type (ADD, DROP, CHANGE)
 	 * @param	string	the column name
 	 * @param	string	the table name
@@ -217,7 +222,7 @@
 	 * @param	string	the field after which we should add the new field
 	 * @return	object
 	 */
-	public function _alter_table($alter_type, $table, $column_name, $column_definition = '', $default_value = '', $null = '', $after_field = '')
+	function _alter_table($alter_type, $table, $column_name, $column_definition = '', $default_value = '', $null = '', $after_field = '')
 	{
 		$sql = 'ALTER TABLE `'.$this->db->protect_identifiers($table).'` '.$alter_type.' '.$this->db->protect_identifiers($column_name);
 
@@ -260,11 +265,12 @@
 	 *
 	 * Generates a platform-specific query so that a table can be renamed
 	 *
+	 * @access	private
 	 * @param	string	the old table name
 	 * @param	string	the new table name
 	 * @return	string
 	 */
-	public function _rename_table($table_name, $new_table_name)
+	function _rename_table($table_name, $new_table_name)
 	{
 		return 'ALTER TABLE '.$this->db->protect_identifiers($table_name).' RENAME TO '.$this->db->protect_identifiers($new_table_name);
 	}
@@ -272,4 +278,4 @@
 }
 
 /* End of file pdo_forge.php */
-/* Location: ./system/database/drivers/pdo/pdo_forge.php */
\ No newline at end of file
+/* Location: ./system/database/drivers/pdo/pdo_forge.php */
diff --git a/system/database/drivers/pdo/pdo_utility.php b/system/database/drivers/pdo/pdo_utility.php
index 02373b7..2c12d74 100644
--- a/system/database/drivers/pdo/pdo_utility.php
+++ b/system/database/drivers/pdo/pdo_utility.php
@@ -41,7 +41,7 @@
 	 *
 	 * @return	bool
 	 */
-	public function _list_databases()
+	protected function _list_databases()
 	{
 		// Not sure if PDO lets you list all databases...
 		if ($this->db->db_debug)
@@ -61,7 +61,7 @@
 	 * @param	string	the table name
 	 * @return	object
 	 */
-	public function _optimize_table($table)
+	protected function _optimize_table($table)
 	{
 		// Not a supported PDO feature
 		if ($this->db->db_debug)
@@ -81,7 +81,7 @@
 	 * @param	string	the table name
 	 * @return	object
 	 */
-	public function _repair_table($table)
+	protected function _repair_table($table)
 	{
 		// Not a supported PDO feature
 		if ($this->db->db_debug)
@@ -99,7 +99,7 @@
 	 * @param	array	Preferences
 	 * @return	mixed
 	 */
-	public function _backup($params = array())
+	protected function _backup($params = array())
 	{
 		// Currently unsupported
 		return $this->db->display_error('db_unsuported_feature');