diff --git a/database/migrations/Migration20260626140000.ts b/database/migrations/Migration20260626140000.ts
index 7e5003a..47a38b1 100644
--- a/database/migrations/Migration20260626140000.ts
+++ b/database/migrations/Migration20260626140000.ts
@@ -28,7 +28,8 @@ export class Migration20260626140000 extends Migration {
             v_discount
         FROM invoice_items
         WHERE invoice_id = v_invoice_id
-        AND deleted_at IS NULL;
+        AND deleted_at IS NULL
+        AND confirmed_at IS NOT NULL;
 
         SELECT enable_tax
         INTO v_enable_tax