diff --git a/examples/jsm/nodes/materials/NodeMaterial.js b/examples/jsm/nodes/materials/NodeMaterial.js
index c3dcd899fd92b6..f87fc9c0ed40ec 100644
--- a/examples/jsm/nodes/materials/NodeMaterial.js
+++ b/examples/jsm/nodes/materials/NodeMaterial.js
@@ -31,6 +31,12 @@ class NodeMaterial extends ShaderMaterial {
 
 	}
 
+	customProgramCacheKey() {
+
+		return this.uuid + '-' + this.version;
+
+	}
+
 	generateMain( builder ) {
 
 		const object = builder.object;