diff --git a/common/Factory/Model.php b/common/Factory/Model.php
index 03ec175..a68554c 100644
--- a/common/Factory/Model.php
+++ b/common/Factory/Model.php
@@ -27,6 +27,7 @@ class Model {
     if (!class_exists($model_class)) {
       throw new \InvalidArgumentException('El modelo ' . $model_class . ' no existe.');
     }
+    $this->reset();
     $this->class = $model_class;
     return $this;
   }