diff --git a/js/core/Window.js b/js/core/Window.js
index 00b27df..de6ba7b 100644
--- a/js/core/Window.js
+++ b/js/core/Window.js
@@ -425,7 +425,9 @@ export class Window extends PsychObject
 		this._size[1] = window.innerHeight;
 
 		// create a PIXI renderer and add it to the document:
-		this._renderer = PIXI.autoDetectRenderer(this._size[0], this._size[1], {
+		this._renderer = PIXI.autoDetectRenderer({
+			width: this._size[0],
+			height: this._size[1],
 			backgroundColor: this.color.int,
 			resolution: window.devicePixelRatio
 		});