diff --git a/examples/webgl_postprocessing.html b/examples/webgl_postprocessing.html
index 57ac71f2dc9e9e03f0909749b057ec3d06de02f1..9fd95d6bf08f8ae44ba5e672d2f4fbac536dc03c 100644
--- a/examples/webgl_postprocessing.html
+++ b/examples/webgl_postprocessing.html
@@ -307,8 +307,8 @@
 
 				renderScene.uniforms[ "tDiffuse" ].value = composerScene.renderTarget2;
 
-				quadBG.scale.set( window.innerWidth, 1, window.innerHeight );
-				quadMask.scale.set( window.innerWidth / 2, 1, window.innerHeight / 2 );
+				quadBG.scale.set( window.innerWidth, window.innerHeight, 1 );
+				quadMask.scale.set( window.innerWidth / 2, window.innerHeight / 2, 1 );
 
 			}