diff --git a/doc/Build-Instructions_zh_CN.md b/doc/Build-Instructions_zh_CN.md
index c11f76b..ebccbfc 100644
--- a/doc/Build-Instructions_zh_CN.md
+++ b/doc/Build-Instructions_zh_CN.md
@@ -1,7 +1,5 @@
 # Webcc 编译指南
 
-**TOC**
-
 * [概览](#概览)
     * [编译依赖](#编译依赖)
     * [编译选项](#编译选项)
@@ -102,7 +100,7 @@ $ sudo apt install zlib1g-dev
 从 Boost 官网下载 [源码包](https://www.boost.org/users/download/#live)，解压并进入根目录：
 
 ```
-$ tar -xzf boost_1_74_0.tar.bz2
+$ tar xzf boost_1_74_0.tar.gz
 $ cd boost_1_74_0
 ```
 
diff --git a/doc/Build-on-Linux.md b/doc/Build-on-Linux.md
index 95dedcb..42b3c81 100644
--- a/doc/Build-on-Linux.md
+++ b/doc/Build-on-Linux.md
@@ -25,7 +25,7 @@ Download the `.tar.bz2` or `.tar.gz` from [here](https://www.boost.org/users/dow
 Unpack and go into the directory (suppose Boost version is 1.74):
 
 ```
-tar -xzf boost_1_74_0.tar.bz2
+tar -xzf boost_1_74_0.tar.gz
 cd boost_1_74_0
 ```