diff --git a/.env b/.env
deleted file mode 100644
index 6acdc4bd..00000000
--- a/.env
+++ /dev/null
@@ -1,4 +0,0 @@
-[APP]
-NAME = Lsky Pro
-DEBUG = false
-TRACE = false
diff --git a/application/index/controller/admin/Group.php b/application/index/controller/admin/Group.php
index ae7caf2b..936d12fa 100644
--- a/application/index/controller/admin/Group.php
+++ b/application/index/controller/admin/Group.php
@@ -66,6 +66,12 @@ class Group extends Base
                 if (true !== $validate) {
                     throw new Exception($validate);
                 }
+                $data['default'] = array_key_exists('default', $data) ? 1 : 0;
+                if ($data['default'] === 0) {
+                    if (!GroupModel::where('default', 1)->where('id', 'neq', $data['id'])->count()) {
+                        throw new Exception('至少保留一个默认分组');
+                    }
+                }
                 if (!GroupModel::update($data)) {
                     throw new Exception('编辑失败');
                 }
diff --git a/application/index/view/admin/group/index.html b/application/index/view/admin/group/index.html
index bbe8520c..07df60a7 100644
--- a/application/index/view/admin/group/index.html
+++ b/application/index/view/admin/group/index.html
@@ -88,7 +88,7 @@
         <div class="mdui-dialog-title">添加角色组</div>
         <div class="mdui-textfield">
           <label class="mdui-textfield-label">组名称</label>
-          <input class="mdui-textfield-input" type="text" name="name" value="" placeholder="用户名" autocomplete="off"/>
+          <input class="mdui-textfield-input" type="text" name="name" value="" placeholder="组名称" autocomplete="off"/>
         </div>
         <div class="mdui-textfield">
           <label class="mdui-textfield-label">使用策略</label>