diff --git a/doc/html/changelog.html b/doc/html/changelog.html
index c424cfa9..fc0dc4d7 100644
--- a/doc/html/changelog.html
+++ b/doc/html/changelog.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/developers.html b/doc/html/developers.html
index 62920e44..06d31c0f 100644
--- a/doc/html/developers.html
+++ b/doc/html/developers.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/documentation.html b/doc/html/documentation.html
index 40d8ff00..d245e848 100644
--- a/doc/html/documentation.html
+++ b/doc/html/documentation.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/documentation_bugs.html b/doc/html/documentation_bugs.html
index 5c2e9d39..ad8b211a 100644
--- a/doc/html/documentation_bugs.html
+++ b/doc/html/documentation_bugs.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/documentation_example_code.html b/doc/html/documentation_example_code.html
index 66350bd2..dea608a2 100644
--- a/doc/html/documentation_example_code.html
+++ b/doc/html/documentation_example_code.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/documentation_format_overview.html b/doc/html/documentation_format_overview.html
index ce785439..5710522b 100644
--- a/doc/html/documentation_format_overview.html
+++ b/doc/html/documentation_format_overview.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/documentation_tools.html b/doc/html/documentation_tools.html
index 2a97afde..971dfeba 100644
--- a/doc/html/documentation_tools.html
+++ b/doc/html/documentation_tools.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/documentation_tools_flac.html b/doc/html/documentation_tools_flac.html
index c055f0a3..8496aca9 100644
--- a/doc/html/documentation_tools_flac.html
+++ b/doc/html/documentation_tools_flac.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/documentation_tools_metaflac.html b/doc/html/documentation_tools_metaflac.html
index 0eb80088..122d70b8 100644
--- a/doc/html/documentation_tools_metaflac.html
+++ b/doc/html/documentation_tools_metaflac.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/faq.html b/doc/html/faq.html
index 8fffb61a..5612002b 100644
--- a/doc/html/faq.html
+++ b/doc/html/faq.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/features.html b/doc/html/features.html
index ee471008..1e87287c 100644
--- a/doc/html/features.html
+++ b/doc/html/features.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/format.html b/doc/html/format.html
index 70365ee4..ad2cddf7 100644
--- a/doc/html/format.html
+++ b/doc/html/format.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/id.html b/doc/html/id.html
index 786d8af8..ac054273 100644
--- a/doc/html/id.html
+++ b/doc/html/id.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/index.html b/doc/html/index.html
index 361bd432..3dabbd16 100644
--- a/doc/html/index.html
+++ b/doc/html/index.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/license.html b/doc/html/license.html
index c921787e..22733880 100644
--- a/doc/html/license.html
+++ b/doc/html/license.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
diff --git a/doc/html/ogg_mapping.html b/doc/html/ogg_mapping.html
index c7b3edc0..e28ca3d0 100644
--- a/doc/html/ogg_mapping.html
+++ b/doc/html/ogg_mapping.html
@@ -6,7 +6,7 @@
 <!-- or any later version published by the Free Software Foundation; -->
 <!-- with no invariant sections. -->
 <!-- A copy of the license can be found at http://www.gnu.org/copyleft/fdl.html -->
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
 	<meta name="author" content="Josh Coalson" />
