diff --git a/en/01.1.md b/en/01.1.md
index 681eb2b4..11bbb795 100644
--- a/en/01.1.md
+++ b/en/01.1.md
@@ -121,7 +121,7 @@ export GOBIN=$GOROOT/bin
 export PATH=$PATH:$GOBIN
 export GOPATH=HOME/gopath 
 ```    
-
+Starting from go 1.8,The GOPATH environment variable now has a default value if it is unset. It defaults to $HOME/go on Unix and %USERPROFILE%/go on Windows.
 ### Homebrew
 
 Homebrew is a software management tool commonly used in Mac to manage packages. Just type the following commands to install Go.
diff --git a/en/01.2.md b/en/01.2.md
index e927e21e..d1260864 100644
--- a/en/01.2.md
+++ b/en/01.2.md
@@ -4,6 +4,8 @@
 
 Go takes a unique approach to manage the code files with the introduction of a `$GOPATH` directory which contains all the go code in the machine. Note that this is different from the `$GOROOT` environment variable which states where go is installed on the machine. We have to define the $GOPATH variable before using the language, in *nix systems there is a file called `.bashrc` we need to append the below export statement to the file. The concept behind gopath is a novel one, where we can link to any go code at any instant of time without ambiguity.
 
+Starting from go 1.8,The GOPATH environment variable now has a default value if it is unset. It defaults to $HOME/go on Unix and %USERPROFILE%/go on Windows.
+
 In Unix-like systems, the variable should be used like this:
 	
 	export GOPATH=/home/apple/mygo
diff --git a/zh/01.1.md b/zh/01.1.md
index 23753f7c..521ec0b9 100644
--- a/zh/01.1.md
+++ b/zh/01.1.md
@@ -46,6 +46,7 @@ Go 1.5彻底移除C代码，Runtime、Compiler、Linker均由Go编写,实现自
 
 如果出现Go的Usage信息，那么说明Go已经安装成功了；如果出现该命令不存在，那么可以检查一下自己的PATH环境变中是否包含了Go的安装目录。
 
+从go 1.8开始，GOPATH环境变量现在有一个默认值，如果它没有被设置。 它在Unix上默认为$HOME/go,在Windows上默认为%USERPROFILE%/go。
 > 关于上面的GOPATH将在下面小节详细讲解
 
 ## Go标准包安装
@@ -154,7 +155,7 @@ sudo tar -xzf go1.8.linux-amd64.tar.gz -C /usr/local
 export GOROOT=/usr/local/go
 export GOBIN=$GOROOT/bin
 export PATH=$PATH:$GOBIN
-export GOPATH=HOME/gopath
+export GOPATH=HOME/gopath (可选设置)
 ```
 或者使用: 
 ```sh 
@@ -165,7 +166,7 @@ sudo vim /etc/profile
 export GOROOT=/usr/local/go
 export GOBIN=$GOROOT/bin
 export PATH=$PATH:$GOBIN
-export GOPATH=HOME/gopath
+export GOPATH=HOME/gopath (可选设置)
 ```
 
 ### homebrew
diff --git a/zh/01.2.md b/zh/01.2.md
index 5c708666..abe528bf 100644
--- a/zh/01.2.md
+++ b/zh/01.2.md
@@ -1,7 +1,8 @@
 # 1.2 GOPATH与工作空间
 
-前面我们在安装Go的时候看到需要设置GOPATH变量，Go从1.1版本开始必须设置这个变量，而且不能和Go的安装目录一样，这个目录用来存放Go源码，Go的可运行文件，以及相应的编译之后的包文件。所以这个目录下面有三个子目录：src、bin、pkg
+前面我们在安装Go的时候看到需要设置GOPATH变量，Go从1.1版本到1.7必须设置这个变量，而且不能和Go的安装目录一样，这个目录用来存放Go源码，Go的可运行文件，以及相应的编译之后的包文件。所以这个目录下面有三个子目录：src、bin、pkg
 
+从go 1.8开始，GOPATH环境变量现在有一个默认值，如果它没有被设置。 它在Unix上默认为$HOME/go,在Windows上默认为%USERPROFILE%/go。
 ## GOPATH设置
   go 命令依赖一个重要的环境变量：$GOPATH