diff --git a/corp/util/Cache.php b/corp/util/Cache.php
index ebbf6cb..42882fa 100755
--- a/corp/util/Cache.php
+++ b/corp/util/Cache.php
@@ -130,7 +130,7 @@ function set($key, $value)
             }
             $item['create_time'] = time();
             $data["$key"] = $item;
-            $this->set_file("filecache.php",json_encode($data));
+            $this->set_file(DIR_ROOT ."filecache.php",json_encode($data));
         }
 	}
 
@@ -172,4 +172,4 @@ function set_file($filename, $content) {
         fwrite($fp, "<?php exit();?>" . $content);
         fclose($fp);
     }
-}
\ No newline at end of file
+}