diff --git a/wp-includes/functions-formatting.php b/wp-includes/functions-formatting.php
index 3e5448c433..277920c2a6 100644
--- a/wp-includes/functions-formatting.php
+++ b/wp-includes/functions-formatting.php
@@ -78,6 +78,47 @@ function wpautop($pee, $br = 1) {
 	return $pee; 
 }
 
+
+function seems_utf8($Str) { # by bmorel at ssi dot fr
+	for ($i=0; $i<strlen($Str); $i++) {
+		if (ord($Str[$i]) < 0x80) continue; # 0bbbbbbb
+		elseif ((ord($Str[$i]) & 0xE0) == 0xC0) $n=1; # 110bbbbb
+		elseif ((ord($Str[$i]) & 0xF0) == 0xE0) $n=2; # 1110bbbb
+		elseif ((ord($Str[$i]) & 0xF8) == 0xF0) $n=3; # 11110bbb
+		elseif ((ord($Str[$i]) & 0xFC) == 0xF8) $n=4; # 111110bb
+		elseif ((ord($Str[$i]) & 0xFE) == 0xFC) $n=5; # 1111110b
+		else return false; # Does not match any model
+		for ($j=0; $j<$n; $j++) { # n bytes matching 10bbbbbb follow ?
+			if ((++$i == strlen($Str)) || ((ord($Str[$i]) & 0xC0) != 0x80))
+			return false;
+		}
+	}
+	return true;
+}
+
+function remove_accents($string) {
+	$chars['in'] = chr(128).chr(131).chr(138).chr(142).chr(154).chr(158)
+	  .chr(159).chr(162).chr(165).chr(181).chr(192).chr(193).chr(194)
+	  .chr(195).chr(196).chr(197).chr(199).chr(200).chr(201).chr(202)
+	  .chr(203).chr(204).chr(205).chr(206).chr(207).chr(209).chr(210)
+	  .chr(211).chr(212).chr(213).chr(214).chr(216).chr(217).chr(218)
+	  .chr(219).chr(220).chr(221).chr(224).chr(225).chr(226).chr(227)
+	  .chr(228).chr(229).chr(231).chr(232).chr(233).chr(234).chr(235)
+	  .chr(236).chr(237).chr(238).chr(239).chr(241).chr(242).chr(243)
+	  .chr(244).chr(245).chr(246).chr(248).chr(249).chr(250).chr(251)
+	  .chr(252).chr(253).chr(255);
+	$chars['out'] = "EfSZszYcYuAAAAAACEEEEIIIINOOOOOOUUUUYaaaaaaceeeeiiiinoooooouuuuyy";
+	if (seems_utf8($string)) {
+		$invalid_latin_chars = array(chr(197).chr(146) => 'OE', chr(197).chr(147) => 'oe', chr(197).chr(160) => 'S', chr(197).chr(189) => 'Z', chr(197).chr(161) => 's', chr(197).chr(190) => 'z', chr(226).chr(130).chr(172) => 'E');
+		$string = utf8_decode(strtr($string, $invalid_latin_chars));
+	}
+	$string = strtr($string, $chars['in'], $chars['out']);
+	$double_chars['in'] = array(chr(140), chr(156), chr(198), chr(208), chr(222), chr(223), chr(230), chr(240), chr(254));
+	$double_chars['out'] = array('OE', 'oe', 'AE', 'DH', 'TH', 'ss', 'ae', 'dh', 'th');
+	$string = str_replace($double_chars['in'], $double_chars['out'], $string);
+	return $string;
+}
+
 function sanitize_title($title) {
     $title = do_action('sanitize_title', $title);
 
@@ -85,6 +126,7 @@ function sanitize_title($title) {
 }
 
 function sanitize_title_with_dashes($title) {
+    $title = remove_accents($title);
     $title = strtolower($title);
     $title = preg_replace('/&.+?;/', '', $title); // kill entities
     $title = preg_replace('/[^a-z0-9 _-]/', '', $title);