diff --git a/examples/js/postprocessing/OutlinePass.js b/examples/js/postprocessing/OutlinePass.js
index 44b143f502ee8e67c7d4c7a1408d9911ed99e6fb..6fb392e90c63a1377bb303c655c25e05c5641c6d 100644
--- a/examples/js/postprocessing/OutlinePass.js
+++ b/examples/js/postprocessing/OutlinePass.js
@@ -74,7 +74,7 @@ THREE.OutlinePass = function ( resolution, scene, camera, selectedObjects ) {
 
 	var copyShader = THREE.CopyShader;
 
-	this.copyUniforms = THREE.UniformsUtils.clone( copyShader.uniforms );
+	this.copyUniforms = Object.assign( {}, copyShader.uniforms );
 	this.copyUniforms[ "opacity" ].value = 1.0;
 
 	this.materialCopy = new THREE.ShaderMaterial( {