diff --git a/subjects/alter-ego/README.md b/subjects/alter-ego/README.md
index a6265451..06f10736 100644
--- a/subjects/alter-ego/README.md
+++ b/subjects/alter-ego/README.md
@@ -18,7 +18,7 @@ const user = {
 }
 ```
 
-#### Adding a new properperty
+#### Adding a new property
 
 ```js
 user.name = 'Martin' // we add a name to our user