diff --git a/src/renderers/WebGLRenderer.js b/src/renderers/WebGLRenderer.js
index 891c8e43b56bcd789b0e3da6d9e3d6aaf3d5d21f..57ad3d1b34502f8fdeccdeaa48a9bbc5ccd2eb16 100644
--- a/src/renderers/WebGLRenderer.js
+++ b/src/renderers/WebGLRenderer.js
@@ -1029,7 +1029,7 @@ function WebGLRenderer( parameters ) {
 
 	var animation = new WebGLAnimation();
 	animation.setAnimationLoop( onAnimationFrame );
-	animation.setContext( window );
+	animation.setContext( typeof window !== 'undefined' ? window : null );
 
 	this.setAnimationLoop = function ( callback ) {