diff --git a/html/dashboard/terminal.html b/html/dashboard/terminal.html
index 572ea74..ead98e9 100644
--- a/html/dashboard/terminal.html
+++ b/html/dashboard/terminal.html
@@ -20,7 +20,7 @@
         <div class="container-fluid">
             <div class="row"><div class="col-12">
                 <div class="input-group mb-3">
-                    <select id="terms" class="form-select"></select>
+                    <select id="terms" class="form-control"></select>
                     <div class="input-group-append">
                         <button id="connect" class="btn btn-primary" type="button">连接</button>
                     </div>
diff --git a/html/vnc/index.html b/html/vnc/index.html
index 97dd136..a830734 100644
--- a/html/vnc/index.html
+++ b/html/vnc/index.html
@@ -20,7 +20,7 @@
         <div class="container-fluid">
             <div>
                 <label>图像质量：</label>
-                <select id="quality" class="form-select">
+                <select id="quality" class="form-control">
                     <option value="100">原始</option>
                     <option value="90" selected>高</option>
                     <option value="70">中</option>