diff --git a/NodeSrv/docs/superpowers/plans/2026-09-05-healthcheck-lineworks-survey-n8n.md b/NodeSrv/docs/superpowers/plans/2026-09-05-healthcheck-lineworks-survey-n8n.md
index c664585f..fdae829e 100644
--- a/NodeSrv/docs/superpowers/plans/2026-09-05-healthcheck-lineworks-survey-n8n.md
+++ b/NodeSrv/docs/superpowers/plans/2026-09-05-healthcheck-lineworks-survey-n8n.md
@@ -1126,7 +1126,7 @@ function verifySignature(rawBody, headerSignature, botSecret) {
 const configRows = $('設定値一括取得').all().map((item) => item.json);
 const config = Object.fromEntries(configRows.map((row) => [row.configKey, row.configValue]));
 
-const item = $input.first();
+const item = $('Webhook').first(); // この直前ノードは「設定値一括取得」(Data Table)のため、裸の$input.first()だとconfig行を拾ってしまいheaders/bodyが無い
 const headers = item.json.headers || {};
 const rawBody = item.binary && item.binary.data
   ? Buffer.from(item.binary.data.data, "base64")