diff --git a/application/controllers/keyworlds.php b/application/controllers/keyworlds.php
index b8e4762d..5d6225f8 100644
--- a/application/controllers/keyworlds.php
+++ b/application/controllers/keyworlds.php
@@ -691,7 +691,7 @@ class Keyworlds extends CI_Controller {
 
     public function testrank($kw_is_id=0, $top=1)
     {
-        $rank_info = $this->Keywordsrank_model->get_rank_list($is_id_string, $top);
+        $rank_info = $this->Keywordsrank_model->get_rank_list($kw_is_id, $top);
         foreach ($rank_info as $key => &$value) {
             $rank_info['ddd'] = date('Y-m-d H:i:s', $value->kwr_datetime);
         }