diff --git a/util/single-header.html b/util/single-header.html
index 3a7cd0e..26971c7 100644
--- a/util/single-header.html
+++ b/util/single-header.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html>
 <head>
-<meta charset=utf-8>
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Dive Into Python 3</title>
 <meta name="author" content="Mark Pilgrim">
 <meta name="subject" content="Python 3 from novice to pro">
