diff --git a/src/admin/config.php b/src/admin/config.php
index 9275ac80..4346dda2 100644
--- a/src/admin/config.php
+++ b/src/admin/config.php
@@ -79,9 +79,6 @@ if ($cfg_dede_log == 'Y') {
         $dsql->ExecuteNoneQuery($inquery);
     }
 }
-if (file_exists(DEDEDATA."/downmix.data.php")) {
-    rename(DEDEDATA."/downmix.data.php",DEDEDATA."/downmix.data.inc");
-}
 //管理缓存管理员栏目缓存
 $cache1 = DEDEDATA.'/cache/inc_catalog_base.inc';
 if (!file_exists($cache1)) UpDateCatCache();