diff --git a/webapp/controller/CircuitController.class.php b/webapp/controller/CircuitController.class.php
index 2108bfac..c8faceb9 100644
--- a/webapp/controller/CircuitController.class.php
+++ b/webapp/controller/CircuitController.class.php
@@ -126,7 +126,12 @@ class CircuitController extends  BaseAuthedController {
         ));
     }
 
-    private function _extractRankingInfo($data){
+    private function _extractRankingInfo($data)
+    {
+        return myself()->_callServiceStatic('CircuitRankingService', 'extractRankingInfo', $data);
+    }
+
+    private function _extractRankingInfoOld($data){
         $rankingList = array();
         $ranking = 0;
         foreach ($data as $k=>$row){