diff --git a/guides/source/4_1_release_notes.md b/guides/source/4_1_release_notes.md
index 822943d81efcca17ddd238354d85fe03dddb291f..5f4bdaaa8f6dc56e553e7a32a93ba7b9e01cd459 100644
--- a/guides/source/4_1_release_notes.md
+++ b/guides/source/4_1_release_notes.md
@@ -157,7 +157,7 @@ By default, these preview classes live in `test/mailers/previews`.
 This can be configured using the `preview_path` option.
 
 See its
-[documentation](http://api.rubyonrails.org/v4.1.0/classes/ActionMailer/Base.html)
+[documentation](http://api.rubyonrails.org/v4.1.0/classes/ActionMailer/Base.html#class-ActionMailer::Base-label-Previewing+emails)
 for a detailed write up.
 
 ### Active Record enums