diff --git a/src/FormBuilder.php b/src/FormBuilder.php
index 3bbea859..af667503 100755
--- a/src/FormBuilder.php
+++ b/src/FormBuilder.php
@@ -1107,7 +1107,7 @@ protected function getModelValueAttribute($name)
             return $this->model->getFormValue($name);
         }
 
-        return data_get($this->model->toArray(), $this->transformKey($name));
+        return data_get($this->model, $this->transformKey($name));
     }
 
     /**