diff --git a/Web-Browsers.md b/Web-Browsers.md
index 3d6f136..6f6234d 100644
--- a/Web-Browsers.md
+++ b/Web-Browsers.md
@@ -45,6 +45,12 @@ gopherjs serve --tags=example
 
 And access to `http://127.0.0.1:8080/github.com/hajimehoshi/ebiten/examples/blocks`.
 
+On Windows, you might need to set `GOOS` environment variable:
+
+```
+set GOOS=linux
+```
+
 # jsgo.io
 
 Dave's [jsgo.io](https://jsgo.io/) is so wonderful that you can play your game on browsers. For example, if you want to play `github.com/hajimehoshi/go-inovation`, you can access `https://jsgo.io/github.com/hajimehoshi/go-inovation`. That's it! Note that you would need to put your resources in appropriate paths, or embed your resources in Go by [file2byteslice](https://github.com/hajimehoshi/file2byteslice) or other similar tools.