diff --git a/en/01.1.md b/en/01.1.md
index 11bbb795..023b989c 100644
--- a/en/01.1.md
+++ b/en/01.1.md
@@ -76,7 +76,7 @@ A 64-bit operating system will show the following:
 
 ### Mac
 
-Go to the [download page](https://golang.org/dl/), choose `go1.4.2.darwin-386.pkg` for 32-bit systems and `go1.8.darwin-amd64.pkg` for 64-bit systems. Going all the way to the end by clicking "next", `~/go/bin` will be added to your system's $PATH after you finish the installation. Now open the terminal and type `go`. You should see the same output shown in figure 1.1.
+Go to the [download page](https://golang.org/dl/), choose `go1.4.2.darwin-386.pkg` (The later version has no 32-bit download.)for 32-bit systems and `go1.8.darwin-amd64.pkg` for 64-bit systems. Going all the way to the end by clicking "next", `~/go/bin` will be added to your system's $PATH after you finish the installation. Now open the terminal and type `go`. You should see the same output shown in figure 1.1.
 
 ### Linux
 
diff --git a/zh/01.1.md b/zh/01.1.md
index 521ec0b9..5be55ffb 100644
--- a/zh/01.1.md
+++ b/zh/01.1.md
@@ -79,7 +79,7 @@ Linux系统用户可通过在Terminal中执行命令`arch`(即`uname -m`)来查
 
 ### Mac 安装
 
-访问[下载地址][downlink]，32位系统下载go1.4.2.darwin-386-osx10.8.pkg(最新版已无32位下载)，64位系统下载go1.8.darwin-amd64.pkg，双击下载文件，一路默认安装点击下一步，这个时候go已经安装到你的系统中，默认已经在PATH中增加了相应的`~/go/bin`,这个时候打开终端，输入`go`
+访问[下载地址][downlink]，32位系统下载go1.4.2.darwin-386-osx10.8.pkg(更新版已无32位下载)，64位系统下载go1.8.darwin-amd64.pkg，双击下载文件，一路默认安装点击下一步，这个时候go已经安装到你的系统中，默认已经在PATH中增加了相应的`~/go/bin`,这个时候打开终端，输入`go`
 
 看到类似上面源码安装成功的图片说明已经安装成功