diff --git a/lang/zh.yml b/lang/zh.yml
index 6da16683a..cea5bb480 100644
--- a/lang/zh.yml
+++ b/lang/zh.yml
@@ -219,7 +219,7 @@ setting_user_format: 用户显示格式
 setting_activity_days_default: 在项目活动中显示的天数
 setting_display_subprojects_issues: 在项目页面上默认显示子项目的问题
 setting_enabled_scm: 启用 SCM
-setting_mail_handler_api_enabled: 启用用于接收邮件的Web Service
+setting_mail_handler_api_enabled: 启用用于接收邮件的服务
 setting_mail_handler_api_key: API key
 setting_sequential_project_identifiers: 顺序产生项目标识
 setting_gravatar_enabled: 使用Gravatar用户头像
@@ -576,6 +576,7 @@ label_planning: 计划
 label_incoming_emails: 接收邮件
 label_generate_key: 生成一个key
 label_issue_watchers: 跟踪者
+label_example: 示例
 
 button_login: 登录
 button_submit: 提交
@@ -690,7 +691,3 @@ default_activity_development: 开发
 enumeration_issue_priorities: 问题优先级
 enumeration_doc_categories: 文档类别
 enumeration_activities: 活动（时间跟踪）
-label_example: Example
-text_repository_usernames_mapping: "Select ou update the Redmine user mapped to each username found in the repository log.\nUsers with the same Redmine and repository username or email are automatically mapped."
-permission_edit_own_messages: Edit own messages
-permission_delete_won_messages: Delete own messages