diff --git a/layouts/alias.html b/layouts/alias.html
index f7ca85b1..57e6fc0e 100644
--- a/layouts/alias.html
+++ b/layouts/alias.html
@@ -9,7 +9,7 @@
     </noscript>
     <script>
       (() => {
-        const supportedLanguages = [{{ range site.Languages }}"{{ .Lang }}",{{ end }}];
+        const supportedLanguages = [{{ range hugo.Sites }}"{{ .Language.Lang }}",{{ end }}];
         const defaultLanguage = "en";
 
         const getTargetLanguage = () => {