diff --git a/web/src/components/settings/LanguageAutoToggle.svelte b/web/src/components/settings/LanguageAutoToggle.svelte
index c992feca..0de00d62 100644
--- a/web/src/components/settings/LanguageAutoToggle.svelte
+++ b/web/src/components/settings/LanguageAutoToggle.svelte
@@ -10,7 +10,7 @@
 
     const updateLocale = () => {
         if ($settings.appearance.autoLanguage) {
-            $locale = device.preferredLocale;
+            $locale = device.prefers.language;
         } else {
             $locale = $settings.appearance.language;
         }