diff --git a/db/migrate/20180406080359_create_order_reservation_items.rb b/db/migrate/20180406080359_create_order_reservation_items.rb
index c74900dd..c2e07f75 100644
--- a/db/migrate/20180406080359_create_order_reservation_items.rb
+++ b/db/migrate/20180406080359_create_order_reservation_items.rb
@@ -13,7 +13,7 @@ class CreateOrderReservationItems < ActiveRecord::Migration[5.1]
 		t.decimal :qty, :precision => 10, :scale => 2, :null => false, :default => 0.00
 		t.decimal :unit_price, :precision => 10, :scale => 2, :null => false, :default => 0.00
 		t.decimal :price, :precision => 10, :scale => 2, :null => false, :default => 0.00
-		t.string :remark
+		t.longtext :remark
 		t.string :options
 		t.boolean :taxable, :null => false, :default => true
 		t.timestamps