diff --git a/aio/content/tutorial/tour-of-heroes/toh-pt6.md b/aio/content/tutorial/tour-of-heroes/toh-pt6.md
index d4b05bd60f1..1be02834a9d 100644
--- a/aio/content/tutorial/tour-of-heroes/toh-pt6.md
+++ b/aio/content/tutorial/tour-of-heroes/toh-pt6.md
@@ -422,7 +422,7 @@ The `searchTerms` becomes an `Observable` emitting a steady stream of search ter
 
 ### Chaining RxJS operators
 
-Passing a new search term directly to the `searchHeroes()` after every user keystroke creates excessive HTTP requests, which taxes server resources and burning through data plans.
+Passing a new search term directly to the `searchHeroes()` after every user keystroke creates excessive HTTP requests, which taxes server resources and burns through data plans.
 
 Instead, the `ngOnInit()` method pipes the `searchTerms` observable through a sequence of RxJS operators that reduce the number of calls to the `searchHeroes()`. Ultimately, this returns an observable of timely hero search results where each one is a `Hero[]`.