diff --git a/readme.md b/readme.md
index 736cc10..f5021f8 100644
--- a/readme.md
+++ b/readme.md
@@ -177,7 +177,7 @@ As opposed to:
 
 ```js
 
-const greeting;
+let greeting;
 
 const greet = () => greeting = "Hi, " + window.name;