Fix a bug in system/core/CodeIgniter.php
diff --git a/system/core/CodeIgniter.php b/system/core/CodeIgniter.php
index cb5d439..7af3c48 100755
--- a/system/core/CodeIgniter.php
+++ b/system/core/CodeIgniter.php
@@ -267,7 +267,7 @@
 	$method = $RTR->fetch_method();
 
 	if ( ! class_exists($class)
-		OR strpos($method, '_', 1) === 0
+		OR strpos($method, '_') === 0
 		OR in_array(strtolower($method), array_map('strtolower', get_class_methods('CI_Controller')))
 		)
 	{