diff --git a/servers/rest_server/includes/ServicesRESTServerFactory.inc b/servers/rest_server/includes/ServicesRESTServerFactory.inc
index 569a3ce8b0936228bd184bab317cfc4d89b8b395..e191ad9b904d007142ffb15c604249a9f4173f93 100644
--- a/servers/rest_server/includes/ServicesRESTServerFactory.inc
+++ b/servers/rest_server/includes/ServicesRESTServerFactory.inc
@@ -30,7 +30,7 @@ class ServicesRESTServerFactory {
     $parsers = $this->getParsers();
     $formatters = $this->getFormatters();
 
-    $class_name = static::$class_name;
+    $class_name = self::$class_name;
     return new $class_name($context, $content_type_negotiator, $resources, $parsers, $formatters);
   }
 
@@ -102,4 +102,4 @@ class ServicesRESTServerFactory {
 
     return $formatters;
   }
-}
\ No newline at end of file
+}