diff --git a/template/src/oj/contest/contest_rank.html b/template/src/oj/contest/contest_rank.html
index c9f0c8a..06b1499 100644
--- a/template/src/oj/contest/contest_rank.html
+++ b/template/src/oj/contest/contest_rank.html
@@ -71,12 +71,12 @@
                         </tbody>
                     </table>
                     <input type="checkbox" id="auto-refresh" {% if auto_refresh %}checked{% endif %}
-                           onchange="if(this.checked){location.href=location.href + '&auto_refresh=true'}else{location.href=location.href=location.href.replace('&auto_refresh=true', '')}">
+                           onchange="if(this.checked){location.href+='?auto_refresh=true'}else{location.href=location.href.replace('?auto_refresh=true', '')}">
                     自动刷新
                 {% else %}
                     <p>还没有结果</p>
                     <input type="checkbox" id="auto-refresh" {% if auto_refresh %}checked{% endif %}
-                           onchange="if(this.checked){location.href=location.href + '&auto_refresh=true'}else{location.href=location.href=location.href.replace('&auto_refresh=true', '')}">
+                           onchange="if(this.checked){location.href+='?auto_refresh=true'}else{location.href=location.href.replace('?auto_refresh=true', '')}">
                     自动刷新
                 {% endif %}