diff --git a/webapp/controller/OutAppCircuitController.class.php b/webapp/controller/OutAppCircuitController.class.php
index c9fd2927..8a89d0bb 100644
--- a/webapp/controller/OutAppCircuitController.class.php
+++ b/webapp/controller/OutAppCircuitController.class.php
@@ -72,7 +72,7 @@ class OutAppCircuitController extends BaseController {
                     $ranking = $k+1;
                     $rewardWeight = \mt\CircuitReward::getRewardWeight($ranking);
                     if ($ranking <= $count){
-                        $cec = ($rewardWeight / $totalWeight) * $cecPool;
+                        $cec = max(1, floor(($rewardWeight / $totalWeight) * $cecPool));
                     }
                     $user = User::find($value['account_id']);
                     CircuitReward::add(