diff --git a/2-ui/2-events/05-dispatch-events/article.md b/2-ui/2-events/05-dispatch-events/article.md
index 930c51fc..b38719f8 100644
--- a/2-ui/2-events/05-dispatch-events/article.md
+++ b/2-ui/2-events/05-dispatch-events/article.md
@@ -8,7 +8,7 @@ We can generate not only completely new events, that we invent for our own purpo
 
 ## Event constructor
 
-Build-in event classes form a hierarchy, similar to DOM element classes. The root is the built-in [Event](http://www.w3.org/TR/dom/#event) class.
+Built-in event classes form a hierarchy, similar to DOM element classes. The root is the built-in [Event](http://www.w3.org/TR/dom/#event) class.
 
 We can create `Event` objects like this: