diff --git a/public/docs/ts/latest/testing/first-app-tests.jade b/public/docs/ts/latest/testing/first-app-tests.jade
index 5e2187405d..06d555a5ab 100644
--- a/public/docs/ts/latest/testing/first-app-tests.jade
+++ b/public/docs/ts/latest/testing/first-app-tests.jade
@@ -218,7 +218,7 @@ figure.image-display
 
   ### Update unit-tests.html
 
-  Next we update the `unit-tests.html` with a reference to our new `hero-spec.ts` file. Delete the inline test code.  The revised pertinent HTML looks like this:
+  Next we update the `unit-tests.html` with a reference to our new `hero.spec.ts` file. Delete the inline test code.  The revised pertinent HTML looks like this:
 
     <script src="app/hero.js"></script>
     <script src="app/hero.spec.js"></script>