diff --git a/system/libraries/Session/Session.php b/system/libraries/Session/Session.php
index 4a96aa6..5c61002 100644
--- a/system/libraries/Session/Session.php
+++ b/system/libraries/Session/Session.php
@@ -179,6 +179,16 @@
 
 	// ------------------------------------------------------------------------
 
+	/**
+	 * CI Load Classes
+	 *
+	 * An internal method to load all possible dependency and extension
+	 * classes. It kind of emulates the CI_Driver library, but is
+	 * self-sufficient.
+	 *
+	 * @param	string	$driver	Driver name
+	 * @return	string	Driver class name
+	 */
 	protected function _ci_load_classes($driver)
 	{
 		// PHP 5.4 compatibility