diff --git a/libs/plugins/modifier.truncate.php b/libs/plugins/modifier.truncate.php
index 943a8ab6..d89bcef5 100644
--- a/libs/plugins/modifier.truncate.php
+++ b/libs/plugins/modifier.truncate.php
@@ -34,7 +34,7 @@ function smarty_modifier_truncate($string, $length = 80, $etc = '...',
         if (mb_strlen($string) > $length) {
             $length -= min($length, mb_strlen($etc));
             if (!$break_words && !$middle) {
-                $string = mb_ereg_replace('/\s+?(\S+)?$/', '', mb_substr($string, 0, $length + 1), 'p');
+                $string = preg_replace('/\s+?(\S+)?$/u', '', mb_substr($string, 0, $length + 1), 'p');
             } 
             if (!$middle) {
                 return mb_substr($string, 0, $length) . $etc;