diff --git a/vue-project/my-kintone-plugin/src/js/helper.ts b/vue-project/my-kintone-plugin/src/js/helper.ts
index 47d43e9..7f3ff71 100644
--- a/vue-project/my-kintone-plugin/src/js/helper.ts
+++ b/vue-project/my-kintone-plugin/src/js/helper.ts
@@ -76,7 +76,7 @@ function flatFields(fields: Properties) {
     if (isType.SUBTABLE(field)) {
       Object.values(field.fields).forEach((subField) => {
         const copy = JSON.parse(JSON.stringify(subField)) as typeof subField;
-        copy.label = '[' + field.code + '].' + field.label;
+        copy.label = '[' + field.code + '].' + subField.label;
         subtableFields[subField.code] = copy;
       })
     }