diff --git a/app/src/Repository/Venta/Propietario.php b/app/src/Repository/Venta/Propietario.php
index 0f34621..d05b331 100644
--- a/app/src/Repository/Venta/Propietario.php
+++ b/app/src/Repository/Venta/Propietario.php
@@ -19,6 +19,10 @@ class Propietario extends Ideal\Repository
     {
         return 'rut';
     }
+    protected function getIndex(Define\Model $model): mixed
+    {
+        return $model->rut;
+    }
 
     public function create(?array $data = null): Define\Model
     {