diff --git a/app/templates/views/guidance/upload-a-letter.html b/app/templates/views/guidance/upload-a-letter.html
index 89249e9e3..e47f84f11 100644
--- a/app/templates/views/guidance/upload-a-letter.html
+++ b/app/templates/views/guidance/upload-a-letter.html
@@ -15,7 +15,7 @@
   <p>To upload and send your own letter from a PDF file:</p>
   
   <ol class="list list-number">
-    <li><a href="{{ url_for('.register') }}">Sign in to Notify</a>.</li>
+    <li><a href="{{ url_for('.sign_in') }}">Sign in to Notify</a>.</li>
     <li>Go to the <b class="govuk-!-font-weight-bold">Uploads</b> page.</li>
     <li>Select <b class="govuk-!-font-weight-bold">Upload a letter</b>.</li>
     <li>Select <b class="govuk-!-font-weight-bold">Choose file</b>.</li>