diff --git a/nginx/login.php b/nginx/login.php
index 497011bb29..59af6cc76e 100644
--- a/nginx/login.php
+++ b/nginx/login.php
@@ -26,7 +26,7 @@
   $post_args["SHIB_ATTR_PAGE_NAME"]=$_SERVER['HTTP_WEKOSOCIETYSUBGROUP'];
   $post_args["SHIB_ATTR_ACTIVE_FLAG"]=$_SERVER['HTTP_WEKOACTIVEUSER'];
   $post_args["SHIB_ATTR_SITE_USER_WITHIN_IP_RANGE_FLAG"]=$_SERVER['HTTP_WEKOSITEUSERWITHINIPRANGE'];
-  $post_args["SHIB_ATTR_ORGANIZATION"] = $_SERVER['uidpDomainName'];
+  $post_args["SHIB_ATTR_ORGANIZATION"] = $_SERVER['HTTP_UIDPDOMAINNAME'];
 
   $options = array(
     //Method