diff --git a/app/templates/partials/templates/guidance-send-a-document.html b/app/templates/partials/templates/guidance-send-a-document.html
index a41f6f15d..6a5f74dd1 100644
--- a/app/templates/partials/templates/guidance-send-a-document.html
+++ b/app/templates/partials/templates/guidance-send-a-document.html
@@ -9,4 +9,4 @@
     Download your document at: ((link_to_document))
   </p>
 </div>
-  Next, use the API to upload your document. Follow the instructions to send a document by email in the <a href="https://www.notifications.service.gov.uk/documentation">API documentation</a>.
+  Next, use the API to upload your document. Follow the instructions to send a document by email in the <a href="{{ url_for('main.documentation') }}">API documentation</a>.