diff --git a/index.html b/index.html
index 9aa9e7b..454213e 100644
--- a/index.html
+++ b/index.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
-<html>
+<html lang="en">
 
-<head lang="en">
+<head>
     <title>OpenStreetMap Building 3D Render</title>
     <meta charset="UTF-8" />
     <link rel="stylesheet" href="style.css">
