diff --git a/common/Factory/Model.php b/common/Factory/Model.php
index 8dcded8..4f77234 100644
--- a/common/Factory/Model.php
+++ b/common/Factory/Model.php
@@ -22,7 +22,7 @@ class Model {
     }
     return $this;
   }
-  public function create(string $model_class, array $data = null): Model {
+  public function create(string $model_class, array $data = null): ModelInterface {
     return BaseModel::factory($model_class)->create($data);
   }
   protected $class;