diff --git a/B09_Estimation/B09_Estimation_UI_Tabs_Bill_Fold.ts b/B09_Estimation/B09_Estimation_UI_Tabs_Bill_Fold.ts
index 4bf765137..9867464c2 100644
--- a/B09_Estimation/B09_Estimation_UI_Tabs_Bill_Fold.ts
+++ b/B09_Estimation/B09_Estimation_UI_Tabs_Bill_Fold.ts
@@ -129,6 +129,7 @@ function foldCard(ctx: TabContext, row: Row, block: Row, close: () => void): HTM
     frozen: 1,
     empty: "",
     editOnDouble: true,
+    onCellClick: () => undefined, // 줄 번호 표식(data-i) — 두 번 눌러 고침 · 우클릭 · 풍선 자리
     editable: (i, key) => {
       const at = lines[i];
       if (!at?.cover || !(key in FIELD)) return false;