diff --git a/module/company/view/browse.html.php b/module/company/view/browse.html.php
index bf046fbd46..50df24cf39 100644
--- a/module/company/view/browse.html.php
+++ b/module/company/view/browse.html.php
@@ -66,7 +66,7 @@ js::set('confirmDelete', $lang->user->confirmDelete);
         </td>
         <td><?php if(!common::printLink('user', 'view', "account=$user->account", $user->realname, '', "title='$user->realname'")) echo $user->realname;?></td>
         <td><?php echo $user->account;?></td>
-        <td><?php echo $lang->user->roleList[$user->role];?></td>
+        <td><?php echo isset($user->role) ? $lang->user->roleList[$user->role] : '';?></td>
         <td><?php echo html::mailto($user->email);?></td>
         <td><?php if(isset($lang->user->genderList[$user->gender])) echo $lang->user->genderList[$user->gender];?></td>
         <td><?php echo $user->phone;?></td>
diff --git a/module/custom/control.php b/module/custom/control.php
index a37ea88342..b67005eb9e 100644
--- a/module/custom/control.php
+++ b/module/custom/control.php
@@ -116,9 +116,10 @@ class custom extends control
                 foreach($_POST['keys'] as $index => $key)
                 {
                     /* Fix bug #942. */
+                    if(!empty($key)) $key = trim($key);
                     if($field == 'priList' and !is_numeric($key)) die(js::alert($this->lang->custom->notice->priListKey));
                     if($module == 'bug' and $field == 'severityList' and !is_numeric($key)) die(js::alert($this->lang->custom->notice->severityListKey));
-                    if(!empty($key) and $key != 'n/a' and !validater::checkREG($key, '/^[a-zA-Z_0-9]+$/')) die(js::alert($this->lang->custom->notice->keyList));
+                    if(!empty($key) and $key != 'n/a' and !validater::checkREG($key, '/^[a-z_0-9]+$/')) die(js::alert($this->lang->custom->notice->keyList));
 
                     /* the length of role is 20, check it when save. */
                     if($module == 'user' and $field == 'roleList' and strlen($key) > 10) die(js::alert($this->lang->custom->notice->userRole));
diff --git a/module/custom/lang/en.php b/module/custom/lang/en.php
index 86598248e3..1a7aed64ab 100644
--- a/module/custom/lang/en.php
+++ b/module/custom/lang/en.php
@@ -89,7 +89,7 @@ $lang->custom->notice->forceReview          = '%s Review is required for certain
 $lang->custom->notice->forceNotReview       = "%s Review is NOT required for certain submitters.";
 $lang->custom->notice->longlife             = 'Define shelved bugs.';
 $lang->custom->notice->priListKey           = 'Priority list key should be numbers！';
-$lang->custom->notice->keyList              = 'key should be English or digital!';
+$lang->custom->notice->keyList              = 'The key should be a combination of lowercase English letters, numbers or underscores';
 $lang->custom->notice->severityListKey      = 'Bug severity list key should be numbers.';
 $lang->custom->notice->indexPage['product'] = "ZenTao 8.2+ has Product Homepage. Do you want to go to Product Homepage?";
 $lang->custom->notice->indexPage['project'] = "ZenTao 8.2+ has Project Homepage. Do you want to go to Project Homepage?";
diff --git a/module/custom/lang/zh-cn.php b/module/custom/lang/zh-cn.php
index 92c0252f81..ffaa5848b0 100644
--- a/module/custom/lang/zh-cn.php
+++ b/module/custom/lang/zh-cn.php
@@ -89,7 +89,7 @@ $lang->custom->notice->forceReview          = "指定人提交的%s必须评审
 $lang->custom->notice->forceNotReview       = "指定人提交的%s不需要评审。";
 $lang->custom->notice->longlife             = 'Bug列表页面的久未处理标签中，列出设置天数之前未处理的Bug。';
 $lang->custom->notice->priListKey           = '优先级的键应当为数字！';
-$lang->custom->notice->keyList              = '键值应当为英文或数字';
+$lang->custom->notice->keyList              = '键值应当为小写英文字母、数字或下划线的组合';
 $lang->custom->notice->severityListKey      = 'Bug严重程度的键应当为数字！';
 $lang->custom->notice->indexPage['product'] = "从8.2版本起增加了产品主页视图，是否默认进入产品主页？";
 $lang->custom->notice->indexPage['project'] = "从8.2版本起增加了项目主页视图，是否默认进入项目主页？";