diff --git a/system/session.php b/system/session.php
index 7a745149..4f85251f 100644
--- a/system/session.php
+++ b/system/session.php
@@ -206,7 +206,7 @@ public static function close()
 		// -----------------------------------------------------
 		if (mt_rand(1, 100) <= 2)
 		{
-			static::driver()->sweep(time() - ($config['lifetime'] * 60));
+			static::driver()->sweep(time() - (Config::get('session.lifetime') * 60));
 		}
 	}