diff --git a/aio/content/guide/pipes.md b/aio/content/guide/pipes.md
index 0d28ab4aa4..7a49dabffa 100644
--- a/aio/content/guide/pipes.md
+++ b/aio/content/guide/pipes.md
@@ -397,7 +397,7 @@ The following code example binds an observable of message strings
 ## Caching HTTP requests
 
 To [communicate with backend services using HTTP](/guide/http "Communicating with backend services using HTTP"), the `HttpClient` service uses observables and offers the `HTTPClient.get()` method to fetch data from a server.
-The aynchronous method sends an HTTP request, and returns an observable that emits the requested data for the response.
+The asynchronous method sends an HTTP request, and returns an observable that emits the requested data for the response.
 
 As shown in the previous section, you can use the impure `AsyncPipe` to accept an observable as input and subscribe to the input automatically.
 You can also create an impure pipe to make and cache an HTTP request.