diff --git a/packages/happy-dom/src/nodes/element/Element.ts b/packages/happy-dom/src/nodes/element/Element.ts
index 8a34c7eae..6b9e57038 100644
--- a/packages/happy-dom/src/nodes/element/Element.ts
+++ b/packages/happy-dom/src/nodes/element/Element.ts
@@ -255,7 +255,15 @@ export default class Element extends Node implements IElement {
 	 * @returns Attributes.
 	 */
 	public get attributes(): INamedNodeMap {
-		return Object.assign(new NamedNodeMap(this), Object.values(this._attributes), this._attributes);
+		const nodeMap = new NamedNodeMap(this);
+		return new Proxy(nodeMap, {
+			get: (target, name) => {
+				return target[name] || (
+					typeof name === "string" || typeof name === "number" 
+					? this._attributes[name] : undefined
+				);
+			}
+		})
 	}
 
 	/**