diff --git a/Contributing-Code.md b/Contributing-Code.md
index f44a36b..3783bd8 100644
--- a/Contributing-Code.md
+++ b/Contributing-Code.md
@@ -17,7 +17,7 @@ If you have/found any concern/problem with this document, **DO NOT** create an i
 1. Please follow the general [code convention](https://github.com/Unknwon/go-code-convention/blob/master/en-US/README.md) for Go.
 2. All `.go` files must be formatted with `gofmt` (most of Go editors should be already possible to format on save).
 3. All `.less` and `.tmpl` files must use **1 tab** as indention.
-4. **NO** modifications to `.css` files should be done by hand, `.css` files are all generated by `.less` files.
+4. **NO** modifications to `.css` files should be done by hand, `.css` files are all generated by `.less` files. Normally you can achieve this by executing `make bindata`.
 
 ### For UI Changes