diff --git a/app/templates/records.html b/app/templates/records.html
index cd74df0..23356fa 100644
--- a/app/templates/records.html
+++ b/app/templates/records.html
@@ -71,8 +71,6 @@
   </table>
 
   {% if total_pages > 1 %}
-  {% set q = {'page': page} %}
-  {% if selected_machine_id %}{% set _ = q.update({'machine_id': selected_machine_id}) %}{% endif %}
   <div style="display:flex;gap:10px;align-items:center;justify-content:flex-end;margin-top:14px;flex-wrap:wrap">
     {% if page > 1 %}
     <a class="btn secondary" href="{{ url_for('records_page', page=page-1, machine_id=selected_machine_id) if selected_machine_id else url_for('records_page', page=page-1) }}">上一页</a>