diff --git a/examples/jsm/nodes/materials/NodeMaterial.js b/examples/jsm/nodes/materials/NodeMaterial.js
index c6f0ee9fb3fdb3..72ded5b3062437 100644
--- a/examples/jsm/nodes/materials/NodeMaterial.js
+++ b/examples/jsm/nodes/materials/NodeMaterial.js
@@ -1,4 +1,4 @@
-import { Material, ShaderMaterial } from 'three';
+import { Material } from 'three';
 import { getNodeChildren, getCacheKey } from '../core/NodeUtils.js';
 import { attribute } from '../core/AttributeNode.js';
 import { output, diffuseColor, varyingProperty } from '../core/PropertyNode.js';
@@ -27,7 +27,7 @@ import { faceDirection } from '../display/FrontFacingNode.js';
 
 const NodeMaterials = new Map();
 
-class NodeMaterial extends ShaderMaterial {
+class NodeMaterial extends Material {
 
 	constructor() {
 
@@ -458,8 +458,6 @@ class NodeMaterial extends ShaderMaterial {
 
 		}
 
-		Object.assign( this.defines, material.defines );
-
 		const descriptors = Object.getOwnPropertyDescriptors( material.constructor.prototype );
 
 		for ( const key in descriptors ) {