diff --git a/src/pages/chat.js b/src/pages/chat.js
index a32e9e8..1d3b515 100644
--- a/src/pages/chat.js
+++ b/src/pages/chat.js
@@ -97,9 +97,6 @@ export async function render() {
     <div class="chat-main">
       <div class="chat-header">
         <div class="chat-status">
-          <button class="chat-toggle-sidebar" id="btn-toggle-sidebar-header" title="会话列表">
-            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" width="18" height="18"><line x1="3" y1="6" x2="21" y2="6"/><line x1="3" y1="12" x2="21" y2="12"/><line x1="3" y1="18" x2="21" y2="18"/></svg>
-          </button>
           <span class="status-dot" id="chat-status-dot"></span>
           <span class="chat-title" id="chat-title">聊天</span>
         </div>
@@ -240,18 +237,13 @@ function bindEvents(page) {
     else sendMessage()
   })
 
-  const _toggleBtns = [
-    page.querySelector('#btn-toggle-sidebar'),
-    page.querySelector('#btn-toggle-sidebar-header'),
-  ].filter(Boolean)
-
-  _toggleBtns.forEach(btn => btn.addEventListener('click', () => {
+  page.querySelector('#btn-toggle-sidebar').addEventListener('click', () => {
     const sidebar = page.querySelector('#chat-sidebar')
     if (!sidebar) return
     const nextOpen = !sidebar.classList.contains('open')
     sidebar.classList.toggle('open', nextOpen)
     setSidebarOpen(nextOpen)
-  }))
+  })
   page.querySelector('#btn-new-session').addEventListener('click', () => showNewSessionDialog())
   page.querySelector('#btn-cmd').addEventListener('click', () => toggleCmdPanel())
   page.querySelector('#btn-reset-session').addEventListener('click', () => resetCurrentSession())