diff --git a/common/Define/Model.php b/common/Define/Model.php
index 7ef95c3..5b2a59e 100644
--- a/common/Define/Model.php
+++ b/common/Define/Model.php
@@ -61,10 +61,10 @@ abstract class Model extends BaseModel implements ModelInterface {
     ], [
       Model::PARENT_KEY => 'id'
     ]);
-    $parent_table = (new $parent_class())->getTable();
+    $parent_table = (new $parent_model_class())->getTable();
     return $this->factory
       ->find($parent_model_class)
-      ->wherer([
+      ->where([
         [
           $relation_definitions[Model::PARENT_KEY],
           $this->{$relation_definitions[Model::SELF_KEY]}
@@ -82,7 +82,7 @@ abstract class Model extends BaseModel implements ModelInterface {
       Model::SELF_KEY => 'id',
       Model::SIBLING_KEY => 'id'
     ]);
-    $sibling_table = (new $sibling_class())->getTable();
+    $sibling_table = (new $sibling_model_class())->getTable();
     return $this->find($sibling_model_class)
       ->select([
         [