diff --git a/app/views/layouts/application.html.haml b/app/views/layouts/application.html.haml
index 4f4f2add983431b4e6a4ba00ef57353cedb5763d..89c7b14c47305a2261d987df954ae38b5aab3284 100644
--- a/app/views/layouts/application.html.haml
+++ b/app/views/layouts/application.html.haml
@@ -1,7 +1,6 @@
!!! 5
-%html
+%html{:lang => 'en'}
%head
- %meta{:content => 'text/html; charset=UTF-8', 'http-equiv' => 'Content-Type'}/
%meta{:charset => 'utf-8'}/
%meta{:name => 'viewport', :content => 'width=device-width, initial-scale=1'}/
%meta{'http-equiv' => 'X-UA-Compatible', :content => 'IE=edge'}/
diff --git a/public/404.html b/public/404.html
index b612547fc21d079889046e65d1fb135ec6921eaa..514a935e23d45a65e028a18f4f58b6fc2579a2c5 100644
--- a/public/404.html
+++ b/public/404.html
@@ -1,6 +1,7 @@
<!DOCTYPE html>
-<html>
+<html lang="en">
<head>
+ <meta charset="utf-8">
<title>The page you were looking for doesn't exist (404)</title>
<meta name="viewport" content="width=device-width,initial-scale=1">
<style>
diff --git a/public/422.html b/public/422.html
index a21f82b3bdb817ecbc43f74c6fe360300739418a..eb3601e71ab88aea63fd3a4f96af289780f3e934 100644
--- a/public/422.html
+++ b/public/422.html
@@ -1,6 +1,7 @@
<!DOCTYPE html>
-<html>
+<html lang="en">
<head>
+ <meta charset="utf-8">
<title>The change you wanted was rejected (422)</title>
<meta name="viewport" content="width=device-width,initial-scale=1">
<style>
diff --git a/public/500.html b/public/500.html
index 061abc587dcac4cdb1d62a890e4fd4bb20b8cb61..af46b8a5a1e28ea682c411331a342c2ee96841f5 100644
--- a/public/500.html
+++ b/public/500.html
@@ -1,6 +1,7 @@
<!DOCTYPE html>
-<html>
+<html lang="en">
<head>
+ <meta charset="utf-8">
<title>We're sorry, but something went wrong (500)</title>
<meta name="viewport" content="width=device-width,initial-scale=1">
<style>