diff --git a/htdocs/install/index.php b/htdocs/install/index.php
index 7feb87d104e..ce90baf8fe6 100644
--- a/htdocs/install/index.php
+++ b/htdocs/install/index.php
@@ -26,7 +26,7 @@
  */
 include_once("./inc.php");
 include_once("../core/class/html.form.class.php");
-include_once("../core/class/html.formadmin.class.php");
+include_once("../html.formadmin.class.php");
 
 
 $err = 0;