diff --git a/store/admin.py b/store/admin.py
index 6810848..1a86720 100644
--- a/store/admin.py
+++ b/store/admin.py
@@ -29,7 +29,7 @@ class CategoryAdmin(admin.ModelAdmin):
         return object.parent or ''
 
     get_str.short_description = 'Родительская категория'
-    get_str.admin_order_field = 'parent__title'
+    get_str.admin_order_field = 'parent__pk'
 
     list_display = ('title', get_str,)
     list_filter = ('parent', )