diff --git a/src/web/app/base.pug b/src/web/app/base.pug
index 81ee7ac061..912157a2e8 100644
--- a/src/web/app/base.pug
+++ b/src/web/app/base.pug
@@ -2,7 +2,7 @@ doctype html
 
 != '\n<!-- Thank you for using Misskey! @syuilo -->\n'
 
-html(lang='ja' dir='ltr')
+html
 
 	head
 		meta(charset='utf-8')