diff --git a/public/docs/ts/latest/testing/testing-an-angular-pipe.jade b/public/docs/ts/latest/testing/testing-an-angular-pipe.jade
index 15bf92ef5e..9db9ea27d0 100644
--- a/public/docs/ts/latest/testing/testing-an-angular-pipe.jade
+++ b/public/docs/ts/latest/testing/testing-an-angular-pipe.jade
@@ -16,10 +16,10 @@ code-example(format="." language="html" escape="html").
   The code for `InitCapsPipe` in `init-caps-pipe.ts` is quite brief:
 
   ```
-  import {Pipe} from 'angular2/core';
+  import {Pipe, PipeTransform} from 'angular2/core';
 
   @Pipe({ name: 'initCaps' })
-  export class InitCapsPipe {
+  export class InitCapsPipe implements PipeTransform{
     transform(value: string) {
       return value.toLowerCase().replace(/(?:^|\s)[a-z]/g, function(m) {
         return m.toUpperCase();
@@ -65,12 +65,13 @@ code-example(format="" language="html" escape="html").
 :marked
   We are writing an Angular application afterall and
   we were going to need Angular sooner or later. That time has come.
-  The `InitCapsPipe` clearly depends on Angular as is clear in the first few lines:
+
+  The `InitCapsPipe` depends on Angular as is clear in the first few lines:
 code-example(format="").
-  import {Pipe} from 'angular2/core';
+  import {Pipe, PipeTransform} from 'angular2/core';
 
   @Pipe({ name: 'initCaps' })
-  export class InitCapsPipe { ... }
+  export class InitCapsPipe  implements PipeTransform { ... }
 :marked
   **Open** `unit-tests.html`
 
@@ -159,5 +160,4 @@ figure.image-display
 
   What about testing parts that *are themselves asynchronous*?
 
-  Let's test a service with a public asynchronous method that fetches heroes
-  from a remote server.
+  Let's test a service with a public asynchronous method that fetches heroes from a remote server.