diff --git a/classes/Tools.php b/classes/Tools.php
index b721973d6..97fc28ec5 100644
--- a/classes/Tools.php
+++ b/classes/Tools.php
@@ -1097,24 +1097,29 @@ class ToolsCore
 	 */
 	public static function replaceAccentedChars($str)
 	{
-		$str = preg_replace('/[\x{0105}\x{0104}\x{00E0}\x{00E1}\x{00E2}\x{00E3}\x{00E4}\x{00E5}]/u', 'a', $str);
-		$str = preg_replace('/[\x{00E7}\x{010D}\x{0107}\x{0106}]/u', 'c', $str);
-		$str = preg_replace('/[\x{010F}]/u', 'd', $str);
-		$str = preg_replace('/[\x{00E8}\x{00E9}\x{00EA}\x{00EB}\x{011B}\x{0119}\x{0118}]/u', 'e', $str);
-		$str = preg_replace('/[\x{00EC}\x{00ED}\x{00EE}\x{00EF}]/u', 'i', $str);
-		$str = preg_replace('/[\x{0142}\x{0141}\x{013E}\x{013A}]/u', 'l', $str);
-		$str = preg_replace('/[\x{00F1}\x{0148}]/u', 'n', $str);
-		$str = preg_replace('/[\x{00F2}\x{00F3}\x{00F4}\x{00F5}\x{00F6}\x{00F8}\x{00D3}]/u', 'o', $str);
-		$str = preg_replace('/[\x{0159}\x{0155}]/u', 'r', $str);
-		$str = preg_replace('/[\x{015B}\x{015A}\x{0161}]/u', 's', $str);
-		$str = preg_replace('/[\x{00DF}]/u', 'ss', $str);
-		$str = preg_replace('/[\x{0165}]/u', 't', $str);
-		$str = preg_replace('/[\x{00F9}\x{00FA}\x{00FB}\x{00FC}\x{016F}]/u', 'u', $str);
-		$str = preg_replace('/[\x{00FD}\x{00FF}]/u', 'y', $str);
-		$str = preg_replace('/[\x{017C}\x{017A}\x{017B}\x{0179}\x{017E}]/u', 'z', $str);
-		$str = preg_replace('/[\x{00E6}]/u', 'ae', $str);
-		$str = preg_replace('/[\x{0153}]/u', 'oe', $str);
-		return $str;
+		$patterns = array(
+			'/[\x{0105}\x{0104}\x{00E0}\x{00E1}\x{00E2}\x{00E3}\x{00E4}\x{00E5}]/u',
+			'/[\x{00E7}\x{010D}\x{0107}\x{0106}]/u',
+			'/[\x{010F}]/u',
+			'/[\x{00E8}\x{00E9}\x{00EA}\x{00EB}\x{011B}\x{0119}\x{0118}]/u',
+			'/[\x{00EC}\x{00ED}\x{00EE}\x{00EF}]/u',
+			'/[\x{0142}\x{0141}\x{013E}\x{013A}]/u',
+			'/[\x{00F1}\x{0148}]/u',
+			'/[\x{00F2}\x{00F3}\x{00F4}\x{00F5}\x{00F6}\x{00F8}\x{00D3}]/u',
+			'/[\x{0159}\x{0155}]/u',
+			'/[\x{015B}\x{015A}\x{0161}]/u',
+			'/[\x{00DF}]/u',
+			'/[\x{0165}]/u',
+			'/[\x{00F9}\x{00FA}\x{00FB}\x{00FC}\x{016F}]/u',
+			'/[\x{00FD}\x{00FF}]/u',
+			'/[\x{017C}\x{017A}\x{017B}\x{0179}\x{017E}]/u',
+			'/[\x{00E6}]/u',
+			'/[\x{0153}]/u'
+		);
+
+		$replacements = array('a', 'c', 'd', 'e', 'i', 'l', 'n', 'o', 'r', 's', 'ss', 't', 'u', 'y', 'z', 'ae', 'oe');
+
+		return preg_replace($patterns, $replacements, $str);
 	}
 
 	/**
@@ -2235,7 +2240,7 @@ FileETag INode MTime Size
 		for ($len; $len > 0; $len--)
 			$str .= '.0';
 	}
-	
+
 	public static function modRewriteActive()
 	{
 		return Tools::apacheModExists('mod_rewrite');
@@ -2266,4 +2271,5 @@ function cmpPriceDesc($a, $b)
 	elseif ((float)($a['price_tmp']) > (float)($b['price_tmp']))
 		return (-1);
 	return (0);
-}
\ No newline at end of file
+}
+