diff --git a/src/QUI/ERP/Customer/EventHandler.php b/src/QUI/ERP/Customer/EventHandler.php
index 6a1f0954f86101e6d3a6876efe8f0f5dfaa756fd..1f7e1027da034eaf2673986687522296d5d3ddfe 100644
--- a/src/QUI/ERP/Customer/EventHandler.php
+++ b/src/QUI/ERP/Customer/EventHandler.php
@@ -198,7 +198,7 @@ protected static function readAttributesFromUserXML(string $file): array
 
     public static function onUserSaveBegin(QUI\Interfaces\Users\User $User): void
     {
-        if (!QUI::getUsers()->isUser($User)) {
+        if (!($User instanceof QUI\Users\User)) {
             return;
         }
 
@@ -238,7 +238,7 @@ public static function onUserSaveBegin(QUI\Interfaces\Users\User $User): void
      */
     public static function onUserSaveEnd(QUI\Interfaces\Users\User $User): void
     {
-        if (!QUI::getUsers()->isUser($User)) {
+        if (!($User instanceof QUI\Users\User)) {
             return;
         }