diff --git a/docs/howto/custom-template-tags.txt b/docs/howto/custom-template-tags.txt
index 17c972a986..eb5c99c719 100644
--- a/docs/howto/custom-template-tags.txt
+++ b/docs/howto/custom-template-tags.txt
@@ -933,7 +933,8 @@ Registering the tag
 ~~~~~~~~~~~~~~~~~~~
 
 Finally, register the tag with your module's ``Library`` instance, as explained
-in "Writing custom template filters" above. Example::
+in :ref:`writing custom template filters<howto-writing-custom-template-tags>`
+above. Example::
 
     register.tag('current_time', do_current_time)