diff --git a/application/common/controller/Backend.php b/application/common/controller/Backend.php
index b680b5a6b0fff014030f8e7fe26fd48d6d739b80..98a603a3a313bf9fa5aaec2d9a61b9ea7f8b25bc 100644
--- a/application/common/controller/Backend.php
+++ b/application/common/controller/Backend.php
@@ -280,7 +280,7 @@ class Backend extends Controller
         $bind = [];
         $name = '';
         $aliasName = '';
-        if (!empty($this->model) && $this->relationSearch) {
+        if (!empty($this->model) && $relationSearch) {
             $name = $this->model->getTable();
             $alias[$name] = Loader::parseName(basename(str_replace('\\', '/', get_class($this->model))));
             $aliasName = $alias[$name] . '.';