diff --git a/index.ts b/index.ts
index b6a37f7d..2776fa91 100644
--- a/index.ts
+++ b/index.ts
@@ -270,7 +270,7 @@ export interface IInitObject {
          * @example
          *  categories: [{ tag: 'local_news', label: 'Local News' }] // The user will be tagged with local_news but will see "Local News" in the prompt.
          */
-        categories: {
+        categories?: {
           /** Should identify the action. */
           tag: string;
 
@@ -299,9 +299,9 @@ export interface IInitObject {
 
           /** Triggers the opt-in. Up to 15 characters. */
           acceptButton?: string;
-
+          
           /** Cancels opt-in. Up to 15 characters. */
-          cancelMessage?: string;
+          cancelButton?:string;
 
           /** The message of the confirmation prompt displayed after the email and/or phone number is provided. Up to 90 characters. */
           confirmMessage?: string;