diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index dd05038f968..4d9c5f49440 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -1169,8 +1169,10 @@ function dol_sanitizeUrl($stringtoclean, $type = 1)
  */
 function dol_string_unaccent($str)
 {
+	global $conf;
+	
 	if (utf8_check($str)) {
-		if (extension_loaded('intl')) {
+		if (extension_loaded('intl') && !empty($conf->global->MAIN_UNACCENT_USE_TRANSLITERATOR)) {
 			$transliterator = \Transliterator::createFromRules(':: Any-Latin; :: Latin-ASCII; :: NFD; :: [:Nonspacing Mark:] Remove; :: NFC;', \Transliterator::FORWARD);
 			return $transliterator->transliterate($str);
 		}