diff --git a/src/QUI/ERP/Accounting/Article.php b/src/QUI/ERP/Accounting/Article.php
index 90c2309f0548892f761fdfa4ad7b92e0072815b2..7b5e8785a2144216bdbd85c4d5fc3e04c6ad4a34 100644
--- a/src/QUI/ERP/Accounting/Article.php
+++ b/src/QUI/ERP/Accounting/Article.php
@@ -241,15 +241,15 @@ public function getView(): ArticleView
     /**
      * Return the Article ID
      *
-     * @return string|int
+     * @return int
      */
     public function getId()
     {
         if (isset($this->attributes['id'])) {
-            return $this->attributes['id'];
+            return (int)$this->attributes['id'];
         }
 
-        return '';
+        return 0;
     }
 
     /**