diff --git a/www/de/index.html b/www/de/index.html
index 7576ed4..b765565 100644
--- a/www/de/index.html
+++ b/www/de/index.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <html lang="de" prefix="og: https://ogp.me/ns#">
 <head>
   <meta charset="UTF-8"/>
diff --git a/www/en/index.html b/www/en/index.html
index d1727bb..c03ae79 100644
--- a/www/en/index.html
+++ b/www/en/index.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <html lang="en" prefix="og: https://ogp.me/ns#">
 <head>
   <meta charset="UTF-8"/>
@@ -20,7 +21,7 @@
   <meta property="og:image:type" content="image/jpeg"/>
   <meta property="og:image:width" content="1200"/>
   <meta property="og:image:height" content="630"/>
-  <meta property="og:locale" content="de"/>
+  <meta property="og:locale" content="en"/>
   <meta property="og:ttl" content="60"/>
   <meta name="twitter:card" content="summary_large_image"/>
 </head>
