diff --git a/app/admin/controller/Config.php b/app/admin/controller/Config.php
index 4abc8eb8f..f91d0e90b 100644
--- a/app/admin/controller/Config.php
+++ b/app/admin/controller/Config.php
@@ -65,7 +65,7 @@ class Config extends Controller
             $this->fetch();
         } else {
             if ($xpath = $this->request->post('xpath')) {
-                if (!preg_match('/^[a-zA-Z_][a-zA-Z0-9_]+$/', $xpath)) {
+                if (!preg_match('/^[a-zA-Z_][a-zA-Z0-9_]*$/', $xpath)) {
                     $this->error('后台入口名称需要是由英文字母开头！');
                 }
                 if ($xpath !== 'admin' && file_exists($this->app->getBasePath() . $xpath)) {
diff --git a/app/admin/view/config/system.html b/app/admin/view/config/system.html
index acd0696ad..4f79deb8b 100644
--- a/app/admin/view/config/system.html
+++ b/app/admin/view/config/system.html
@@ -5,7 +5,7 @@
             <span class="color-desc margin-left-5">Login</span>
             <label class="layui-input relative block label-required-null">
                 <span>{:sysuri('@',[],false,true)}</span>
-                <input autofocus required pattern="[a-zA-Z_][a-zA-Z0-9_]+" placeholder="请输入后台登录入口" class="layui-input inline-block padding-0 border-0" style="width:auto;background:none" value="{:trim(sysuri('admin/index/index',[],false),'/')}" name="xpath">
+                <input autofocus required pattern="[a-zA-Z_][a-zA-Z0-9_]*" placeholder="请输入后台登录入口" class="layui-input inline-block padding-0 border-0" style="width:auto;background:none" value="{:trim(sysuri('admin/index/index',[],false),'/')}" name="xpath">
             </label>
             <span class="help-block">名称由英文字母开头且不能存在相同名称的应用，设置之后原地址不能继续访问！</span>
         </div>