diff --git a/types/gtag.js/index.d.ts b/types/gtag.js/index.d.ts
index bcbabbe647..e20cc9d4fa 100644
--- a/types/gtag.js/index.d.ts
+++ b/types/gtag.js/index.d.ts
@@ -23,7 +23,6 @@ declare namespace Gtag {
   }
 
   type EventNames = 'add_payment_info'
-    | 'add_payment_info'
     | 'add_to_cart'
     | 'add_to_wishlist'
     | 'begin_checkout'
@@ -67,7 +66,7 @@ declare namespace Gtag {
     transaction_id?: string;
     value?: number;
     event_label?: string;
-    event_category: string;
+    event_category?: string;
   }
 
   type Currency = string | number;