diff --git a/aio/content/tutorial/toh-pt4.md b/aio/content/tutorial/toh-pt4.md
index c5a87b2ff7..0c56a0ba69 100644
--- a/aio/content/tutorial/toh-pt4.md
+++ b/aio/content/tutorial/toh-pt4.md
@@ -348,7 +348,7 @@ Open `MessagesComponent` and import the `MessageService`.
 
 Modify the constructor with a parameter that declares a **public** `messageService` property.
 Angular will inject the singleton `MessageService` into that property 
-when it creates the `HeroService`.
+when it creates the `MessagesComponent`.
 
 <code-example
   path="toh-pt4/src/app/messages/messages.component.ts" region="ctor">