diff --git a/docs/landscape_grid.html b/docs/landscape_grid.html
--- a/docs/landscape_grid.html
+++ b/docs/landscape_grid.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 <html>
 <head>
-  <meta content="text/html; charset=UTF-8" http-equiv="content-type">
+  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   <meta name="Description" content="Structure of OpenTTD (OTTD) landscape arrays #2">
   <title>OpenTTD Landscape Internals - #2</title>
   <style type="text/css">
