diff --git a/src/SamlUser.php b/src/SamlUser.php
index 439e107..49ec73b 100644
--- a/src/SamlUser.php
+++ b/src/SamlUser.php
@@ -26,7 +26,6 @@ function __construct($attributes=[]) {
       $idAttribute = $attributes['idAttribute'];
       $mappings = (new ArrayObject($attributes))->getArrayCopy();
       unset($mappings['idAttribute']);
-      $mappings = array_values($mappings);
     }
     Yii::$container->get('samlsettings')->idAttribute = $idAttribute;
     Yii::$container->get('samlsettings')->mappings = $mappings;