diff --git a/tests/mocks/ci_testconfig.php b/tests/mocks/ci_testconfig.php
index eb318dd..0c52bb9 100644
--- a/tests/mocks/ci_testconfig.php
+++ b/tests/mocks/ci_testconfig.php
@@ -4,14 +4,16 @@
 
 	public $config = array();
 	public $_config_paths = array(APPPATH);
+	public $loaded = array();
 
 	public function item($key)
 	{
 		return isset($this->config[$key]) ? $this->config[$key] : FALSE;
 	}
 
-	public function load($arg1, $arg2, $arg3)
+	public function load($file, $arg2 = FALSE, $arg3 = FALSE)
 	{
+		$this->loaded[] = $file;
 		return TRUE;
 	}