diff --git a/themes/bluemarine/page.tpl.php b/themes/bluemarine/page.tpl.php
index 1a1e73ff5a4b039ba902b515a67d06a99e2c21fe..3336e183f9fc329bbfb92d7aa4202e65150d9331 100644
--- a/themes/bluemarine/page.tpl.php
+++ b/themes/bluemarine/page.tpl.php
@@ -1,7 +1,7 @@
<?php
// $Id$
?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php print $language->language ?>" lang="<?php print $language->language ?>" dir="<?php print $language->dir ?>"
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php print $language->language ?>" dir="<?php print $language->dir ?>"
<?php print $rdf_namespaces ?>>
<head profile="<?php print $grddl_profile ?>">
<title><?php print $head_title ?></title>
diff --git a/themes/chameleon/chameleon.theme b/themes/chameleon/chameleon.theme
index fbf3b5e8e9bb1ba72802712f7071322a54c2513c..43630a9ae273b34c03ef34038e2f5ec869ce892d 100644
--- a/themes/chameleon/chameleon.theme
+++ b/themes/chameleon/chameleon.theme
@@ -29,7 +29,7 @@ function chameleon_page($content, $show_blocks = TRUE, $show_messages = TRUE) {
$blocks_right = theme_blocks('right');
$output = "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML+RDFa 1.0//EN\" \"http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd\">\n";
- $output .= "<html xmlns=\"http://www.w3.org/1999/xhtml\" lang=\"$language\" xml:lang=\"$language\" dir=\"$direction\"\n";
+ $output .= "<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"$language\" dir=\"$direction\"\n";
$output .= " $rdf_namespaces>\n";
$output .= "<head profile=\"http://ns.inria.fr/grddl/rdfa/\">\n";
$output .= " <title>" . ($title ? strip_tags($title) . " | " . variable_get("site_name", "Drupal") : variable_get("site_name", "Drupal") . " | " . variable_get("site_slogan", "")) . "</title>\n";
diff --git a/themes/garland/page.tpl.php b/themes/garland/page.tpl.php
index f6afc5eb1ea44d7b67cb661bcd922e0aad44c343..396c9db23fa73c718c96bca441344b0063aa4438 100644
--- a/themes/garland/page.tpl.php
+++ b/themes/garland/page.tpl.php
@@ -2,7 +2,7 @@
// $Id$
?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN"
"http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php print $language->language ?>" lang="<?php print $language->language ?>" dir="<?php print $language->dir ?>"
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php print $language->language ?>" dir="<?php print $language->dir ?>"
<?php print $rdf_namespaces ?>>
<head profile="<?php print $grddl_profile ?>">
<title><?php print $head_title ?></title>
diff --git a/themes/pushbutton/page.tpl.php b/themes/pushbutton/page.tpl.php
index 8cf1c3981a577fa66418218460313d1c0ef35275..2dd5ad9c499d8f06a2b92bb81b49e0d3efa08a61 100644
--- a/themes/pushbutton/page.tpl.php
+++ b/themes/pushbutton/page.tpl.php
@@ -1,7 +1,7 @@
<?php
// $Id$
?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php print $language->language ?>" lang="<?php print $language->language ?>" dir="<?php print $language->dir ?>"
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php print $language->language ?>" dir="<?php print $language->dir ?>"
<?php print $rdf_namespaces ?>>
<head profile="<?php print $grddl_profile ?>">
<title><?php print $head_title ?></title>