diff --git a/README.md b/README.md
index 6a2f2cc..8eae673 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ go get github.com/faiface/pixel
 If you are using Modules (Go 1.11 or higher) and want a mutable copy of the source code:
 
 ```
-git clone https://github.com/faiface/pixel ;# clone outside of GOPATH
+git clone https://github.com/faiface/pixel # clone outside of $GOPATH
 cd pixel
 go install ./...
 ```