diff --git a/f_func/class._String.php b/f_func/class._String.php
index 5ab0cbb6..be0865eb 100644
--- a/f_func/class._String.php
+++ b/f_func/class._String.php
@@ -173,7 +173,7 @@ class _String {
         $size = strlen($str);
 
         $count = ($maxsize - $size);
-
+		$string = '';
         for($i=0; $i < $count; $i++) {
             $string = $string.$ch;
         }