diff --git a/app/src/main/assets/help/regex.md b/app/src/main/assets/help/regex.md
index 846814aab..93888dcf2 100644
--- a/app/src/main/assets/help/regex.md
+++ b/app/src/main/assets/help/regex.md
@@ -1,4 +1,4 @@
-# 目录
+## 正则表达式学习
 
 - [基本匹配](#1-基本匹配)
 - [元字符](#2-元字符)