diff --git a/frappe/templates/base.html b/frappe/templates/base.html
index a00592f743..18c9e9d99a 100644
--- a/frappe/templates/base.html
+++ b/frappe/templates/base.html
@@ -129,7 +129,7 @@
);
});
$("#language-switcher").removeClass('hide');
- language = language || language_codes.includes(navigator.language) ? navigator.language : 'en';
+ language = language || (language_codes.includes(navigator.language) ? navigator.language : 'en');
$("#language-switcher").val(language);
document.documentElement.lang = language;
$("#language-switcher").change((e) => {