diff --git a/docs/index.html b/docs/index.html
index 540a61f36..4390378af 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -1,13 +1,13 @@
-<HTML>
-<HEAD>
-<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
-<TITLE>Index to Curl documentation</TITLE>
-</HEAD>
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html><head>
+<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+<title>Index to Curl documentation</title>
+</head>
 
-<BODY>
-<H1 ALIGN="CENTER">Index to Curl documentation</H1>
+<body>
+<h1 align="center">Index to Curl documentation</h1>
 
-<H2>Programs</H2>
+<h2>Programs</h2>
 <a href="curl-config.html">curl-config</A>
 <br><a href="curl.html">curl</A>
 
@@ -17,5 +17,4 @@
 <h2>libcurl</h2>
 See the <a href="libcurl/index.html">libcurl section</a>
 
-</BODY>
-</HTML>
+</body></html>
