diff --git a/1-js/09-classes/07-mixins/article.md b/1-js/09-classes/07-mixins/article.md
index 526b832efa..a28324f1c7 100644
--- a/1-js/09-classes/07-mixins/article.md
+++ b/1-js/09-classes/07-mixins/article.md
@@ -115,7 +115,7 @@ An important feature of many browser objects (for instance) is that they can gen
 - Also the method `.on(name, handler)` that adds `handler` function as the listener to events with the given name. It will be called when an event with the given `name` triggers, and get the arguments from the `.trigger` call.
 - ...And the method `.off(name, handler)` that removes the `handler` listener.
 
-After adding the mixin, an object `user` will be able to generate an event `"login"` when the visitor logs in. And another object, say, `calendar` may want to listen for such events to load the calendar for the logged-in person.
+After adding the mixin, the object `user` will be able to generate an event `"login"` when the visitor logs in. And another object, say, `calendar` may want to listen for such events to load the calendar for the logged-in person.
 
 Or, a `menu` can generate the event `"select"` when a menu item is selected, and other objects may assign handlers to react on that event. And so on.