diff --git a/Installation.md b/Installation.md
index 1592919..8bc6e70 100644
--- a/Installation.md
+++ b/Installation.md
@@ -11,7 +11,7 @@ go get github.com/gopherjs/gopherjs
 go get github.com/gopherjs/webgl
 ```
 
-If you want to recompile every time when you run your game, you can install them.
+If you don't want to recompile every time when you run your game, you can install them.
 
 ```sh
 go install github.com/hajimehoshi/ebiten/...