diff --git a/index.d.ts b/index.d.ts
index 600ab091..33ed4d96 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -9,11 +9,11 @@ export type MixpanelAsyncStorage = {
 
 export class Mixpanel {
   constructor(token: string, trackAutoMaticEvents: boolean);
-  constructor(token: string, trackAutoMaticEvents: boolean, useNative: true);
+  constructor(token: string, trackAutoMaticEvents: boolean, useNative?: boolean);
   constructor(
     token: string,
     trackAutomaticEvents: boolean,
-    useNative: false,
+    useNative?: boolean,
     storage?: MixpanelAsyncStorage
   );
   static init(