diff --git a/hugo.yaml b/hugo.yaml
index 94e395c..6db5c6c 100644
--- a/hugo.yaml
+++ b/hugo.yaml
@@ -1,5 +1,5 @@
 baseURL: 'https://ipng.ch/'
-languageCode: 'en-us'
+locale: 'en-us'
 title: "IPng Networks"
 theme: 'hugo-theme-ipng'
 
diff --git a/themes/hugo-theme-ipng/layouts/_default/rss.xml b/themes/hugo-theme-ipng/layouts/_default/rss.xml
index 6d785ea..c667e73 100644
--- a/themes/hugo-theme-ipng/layouts/_default/rss.xml
+++ b/themes/hugo-theme-ipng/layouts/_default/rss.xml
@@ -5,7 +5,7 @@
         <link>{{ .Permalink }}</link>
         <description>Latest blog posts from {{ .Site.Title }}</description>
 
-        {{ with .Site.LanguageCode }}
+        {{ with .Site.Language.Locale }}
         <language>{{.}}</language>
         {{end}}