diff --git a/system/helpers/url_helper.php b/system/helpers/url_helper.php
index 6e2f7f4..2f93bcf 100644
--- a/system/helpers/url_helper.php
+++ b/system/helpers/url_helper.php
@@ -39,8 +39,8 @@
  */	
 function site_url($uri = '')
 { 
-	$obj =& get_instance();
-	return $obj->config->site_url($uri);
+	$CI =& get_instance();
+	return $CI->config->site_url($uri);
 }
 	
 // ------------------------------------------------------------------------
@@ -55,8 +55,8 @@
  */	
 function base_url()
 { 
-	$obj =& get_instance();
-	return $obj->config->slash_item('base_url');
+	$CI =& get_instance();
+	return $CI->config->slash_item('base_url');
 }
 	
 // ------------------------------------------------------------------------
@@ -71,8 +71,8 @@
  */	
 function index_page()
 { 
-	$obj =& get_instance();
-	return $obj->config->item('index_page');
+	$CI =& get_instance();
+	return $CI->config->item('index_page');
 }
 	
 // ------------------------------------------------------------------------