diff --git a/ietf/templates/base.html b/ietf/templates/base.html
index 61a8f45b3..875bc5f96 100644
--- a/ietf/templates/base.html
+++ b/ietf/templates/base.html
@@ -65,7 +65,7 @@ IETF.user_groups = {{ user|user_roles_json }};
 <div id="ietf-login" class="noprint">{% if user.is_authenticated %}
 {{ user }}
 {% else %}
-<a href="https://datatracker.ietf.org/accounts/login/?next={{request.get_full_path|urlencode}}" rel="nofollow">Sign In</a>
+<a href="https://{{ request.get_host }}/accounts/login/?next={{request.get_full_path|urlencode}}" rel="nofollow">Sign In</a>
 {% endif %}</div>
 {% endif %}