diff --git a/application/models/infokeywords_model.php b/application/models/infokeywords_model.php
index 1bfeac2c..07d2cb73 100644
--- a/application/models/infokeywords_model.php
+++ b/application/models/infokeywords_model.php
@@ -122,7 +122,7 @@ class infoKeywords_model extends CI_Model
                              kwr_mobile_rank,
                              kwr_id
                 FROM     infoKeywords INNER JOIN infoKeywordsrank ON kwr_kw_id=kw_id
-                AND kwr_id = ( SELECT top 1 kwr_id FROM infoKeywordsrank WHERE kwr_kw_id=kw_id order by kwr_datetime desc )
+                AND kwr_id = ( SELECT top 1 kwr_id FROM infoKeywordsrank WHERE kwr_kw_id=kw_id order by kwr_id desc )
                 WHERE kw_status=1 $map
                 AND (
                     (kw_datetime>$today0 and kwr_mobile_rank IS NULL)