diff --git a/objects/Rack.js b/objects/Rack.js
index 2793af8..72885d8 100644
--- a/objects/Rack.js
+++ b/objects/Rack.js
@@ -1,5 +1,5 @@
 class Rack{
-    constructor(noOfShelf) {
+    constructor(noOfShelf, typOfProduct) {
         this.noOfShelf = noOfShelf;
     }