diff --git a/public/docs/ts/latest/testing/application-under-test.jade b/public/docs/ts/latest/testing/application-under-test.jade
index 01bdb48c27..530ba4dd6f 100644
--- a/public/docs/ts/latest/testing/application-under-test.jade
+++ b/public/docs/ts/latest/testing/application-under-test.jade
@@ -3,7 +3,7 @@ include ../_util-fns
 :marked
   We’ll need an Angular application to test, one as simple as possible while having most of the angular features we want to test.
 
-  What better app than our own [The Tour of Heroes](../tutorial/toh-pt5)? We're already quite familiar with it and it fits our criteria, so let's try to test what we've done there.
+  What better app than our own [The Tour of Heroes](../tutorial/toh-pt5.html)? We're already quite familiar with it and it fits our criteria, so let's try to test what we've done there.
   
   We might end up modifying it a bit, because it doesn't have everything we want to test, but it's the perfect starting point.