diff --git a/src/renderers/webgl/WebGLBackground.js b/src/renderers/webgl/WebGLBackground.js
index 7529aa6338a0a2ba70712ca92c859c32f54e16fb..fdaaf9095beb273e0ae054db0992e239d012bc01 100644
--- a/src/renderers/webgl/WebGLBackground.js
+++ b/src/renderers/webgl/WebGLBackground.js
@@ -27,6 +27,9 @@ function WebGLBackground( renderer, state, objects, premultipliedAlpha ) {
 
 		var background = scene.background;
 
+		var session = renderer.vr.getSession();
+		if ( session && session.environmentBlendMode === 'additive' ) background = null;
+
 		if ( background === null ) {
 
 			setClear( clearColor, clearAlpha );