diff --git a/views/problem.ejs b/views/problem.ejs
index e2d2d56..37afe25 100644
--- a/views/problem.ejs
+++ b/views/problem.ejs
@@ -29,7 +29,7 @@
         <% } %>
         <% if (user && user.is_admin) { %>
           <% if (problem.is_public) {  %>
-        <button class="small ui button" id="un_public">取消公开</button>
+        <button class="small ui button" id="dis_public">取消公开</button>
           <% } else { %>
         <button class="small ui button" id="public">公开</button>
           <% } %>