diff --git a/sipa/templates/base.html b/sipa/templates/base.html
index c871987f..2c0a174a 100644
--- a/sipa/templates/base.html
+++ b/sipa/templates/base.html
@@ -64,8 +64,8 @@
{% block custom_css %}{% endblock %}
+ {{- get_locale() | string | tojson -}}
+