diff --git a/packages/layers/ux/app/components/XContent/LocaleSwitcher.vue b/packages/layers/ux/app/components/XContent/LocaleSwitcher.vue
index 8a22919..6232bb8 100644
--- a/packages/layers/ux/app/components/XContent/LocaleSwitcher.vue
+++ b/packages/layers/ux/app/components/XContent/LocaleSwitcher.vue
@@ -30,6 +30,7 @@ const classes = useStyling(
       to: { path: path(undefined, { locale: candidate.code }).value, query: { freeze: 'true' } },
       '@click': preferLocale(candidate.code),
       active: false,
+      hreflang: candidate.code, // keep for SEO
     }"
     :text="candidate.code.toUpperCase()"
     v-for="candidate in candidates"