diff --git a/www-api/app/Models/ResultFormatter.php b/www-api/app/Models/ResultFormatter.php
index dd2ef883..d70705a6 100644
--- a/www-api/app/Models/ResultFormatter.php
+++ b/www-api/app/Models/ResultFormatter.php
@@ -641,11 +641,12 @@ class ResultFormatter extends Model
                 );
                 for ($i = 0; $i < $total; $i++) {
                     $key = sprintf("%05d", $i);
+                    $group_id = $out["group_id_${key}"];
                     $res["result_list"][] = array(
                         "group_uid" => $out["group_uid_${key}"],
                         "group_name" => $out["group_name_${key}"],
                         "group_id" => $out["group_id_${key}"],
-                        "member_count" => $out["member_count_${key}"],
+                        "member_count" => $out["group_count_id_${group_id}"] ?? 0,
                     );
                 }