diff --git a/webapp/controller/ActivityController.class.php b/webapp/controller/ActivityController.class.php
index a3dfd5a..fefc819 100644
--- a/webapp/controller/ActivityController.class.php
+++ b/webapp/controller/ActivityController.class.php
@@ -386,7 +386,7 @@ class ActivityController{
         for ($ii = 1; $ii <= count($g_conf_lot_cluster); $ii++) {
             $l = $this->getDrawTableConfig($ii);
             $weight += $l['jilv'];
-            if ($weight > $random) {
+            if ($weight >= $random) {
                 $key = $ii;
                 break;
             }