diff --git a/app/models/menu_item_instance.rb b/app/models/menu_item_instance.rb
index baad6392..ba075754 100755
--- a/app/models/menu_item_instance.rb
+++ b/app/models/menu_item_instance.rb
@@ -6,7 +6,7 @@ class MenuItemInstance < ApplicationRecord
   # before_create :generate_menu_item_instance_code
   # validates_presence_of :item_instance_code
 
-  validates_uniqueness_of :item_instance_code
+  validates_uniqueness_of :item_instance_code, scope: :shop_code
 
   def self.findParentCategory(item)
     if item.menu_category_id