diff --git a/app/Models/CollectorModel.php b/app/Models/CollectorModel.php
index cb00a74..4ff9d57 100644
--- a/app/Models/CollectorModel.php
+++ b/app/Models/CollectorModel.php
@@ -56,8 +56,8 @@ class CollectorModel extends CommonModel
         if ($total === 0) {
             return null;
         }
-        // 2) index = floor(total * 0.95) + 1
-        $index = floor($total * 0.95) + 1;
+        // 2) index = floor(total * 0.95)
+        $index = floor($total * 0.95);
         // 3) 95% + 1 번째 값 조회
         $builder = $this->builder();
         $builder->select($field)