diff --git a/default.html b/default.html
index 0b1e6cc8a..aeba421e7 100644
--- a/default.html
+++ b/default.html
@@ -10,6 +10,7 @@ $if(html5)$
   <meta charset="utf-8" />
 $else$
   <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+  <meta http-equiv="Content-Style-Type" content="text/css" />
 $endif$
   <meta name="generator" content="pandoc" />
 $for(author)$