Index: canonical.php
===================================================================
--- canonical.php	(revision 6085)
+++ canonical.php	(working copy)
@@ -142,6 +142,7 @@
 		// var_dump($redirect_url); die();
 		$redirect_url = apply_filters('redirect_canonical', $redirect_url, $requested_url);
 		if ( $do_redirect) {
+			$redirect_url = strtolower($redirect_url);
 			// protect against chained redirects
 			if ( !redirect_canonical($redirect_url, false) ) {
 				wp_redirect($redirect_url, 301);
@@ -180,4 +181,4 @@
 
 add_action('template_redirect', 'redirect_canonical');
 
-?>
\ No newline at end of file
+?>