--- a/default/error/404.html	Fri May 19 12:59:43 2017 +0200
+++ b/default/error/404.html	Sun May 21 16:10:44 2017 +0200
@@ -1,6 +1,6 @@
 {% extends 'error/base.html' %}
 
 {% block body %}
-<h1>Not Found</h1>
-<p>Sorry, we can't find the resource you are trying to access.</p>
+<h1>{% trans %}Not Found{% endtrans %}</h1>
+<p>{% trans %}Sorry, we can't find the resource you are trying to access.{% endtrans %}</p>
 {% endblock body %}