diff --git a/app/templates/error/400.html b/app/templates/error/400.html
index ce9c4f2bc..77e546877 100644
--- a/app/templates/error/400.html
+++ b/app/templates/error/400.html
@@ -1,5 +1,5 @@
 {% extends "withoutnav_template.html" %}
-{% block per_page_title %}Bad Request{% endblock %}
+{% block per_page_title %}Bad Request – GOV.UK Notify{% endblock %}
 {% block maincolumn_content %}
 <div class="grid-row">
     <div class="column-two-thirds">