diff --git a/src/Services/Tg/Helper.php b/src/Services/Tg/Helper.php
index 9b2599dc..b453f5b9 100644
--- a/src/Services/Tg/Helper.php
+++ b/src/Services/Tg/Helper.php
@@ -35,7 +35,7 @@ class Helper {
     public static function valueFormat($sValue)
     {
         
-        return $this->_valueFormat($sValue);
+        return self::_valueFormat($sValue);
         
     }