diff --git a/examples/jsm/webxr/ARButton.d.ts b/examples/jsm/webxr/ARButton.d.ts
index a826344b04d0e6f8ce3914900c63902b0a1e53af..03841597a36655102d1acaee9b6b745baaefc05c 100644
--- a/examples/jsm/webxr/ARButton.d.ts
+++ b/examples/jsm/webxr/ARButton.d.ts
@@ -3,5 +3,5 @@ import {
 } from '../../../src/Three';
 
 export namespace ARButton {
-	export function createButton( renderer: WebGLRenderer ): HTMLElement;
+	export function createButton( renderer: WebGLRenderer, sessionInit?: any ): HTMLElement;
 }