diff --git a/sipa/static/js/agdsn.js b/sipa/static/js/agdsn.js
index fb7f57ea..e6d18546 100644
--- a/sipa/static/js/agdsn.js
+++ b/sipa/static/js/agdsn.js
@@ -1,5 +1,5 @@
 function get_language() {
-    return document.documentElement.lang;
+    return JSON.parse(document.getElementById('locale').innerHTML);
 }
 
 let statusMessages = {
diff --git a/sipa/templates/base.html b/sipa/templates/base.html
index a42d3594..c871987f 100644
--- a/sipa/templates/base.html
+++ b/sipa/templates/base.html
@@ -62,6 +62,10 @@
     <link rel="stylesheet" type="text/css"
           href="{{ url_for('static', filename='css/style.css') }}"/>
     {% block custom_css %}{% endblock %}
+
+    <script type="application/json" id="locale">
+            {{ get_locale() | string | tojson }}
+        </script>
 </head>
 
 <body>
