diff --git a/packages/happy-dom/src/query-selector/QuerySelector.ts b/packages/happy-dom/src/query-selector/QuerySelector.ts
index ad0958c60..b0c702022 100644
--- a/packages/happy-dom/src/query-selector/QuerySelector.ts
+++ b/packages/happy-dom/src/query-selector/QuerySelector.ts
@@ -104,15 +104,15 @@ export default class QuerySelector {
 		}
 
 		const selector = new SelectorItem(selectorParts[0]);
-		const result = selector.match(<Element>currentNode);
+		const result = selector.match(<IElement>currentNode);
 
-		if ((targetNode === currentNode || !currentNode.parentNode) && !result.matches) {
+		if ((targetNode === currentNode || !currentNode.parentElement) && !result.matches) {
 			return { priorityWeight: 0, matches: false };
 		}
 
 		return this.matchesSelector(
-			isDirectChild ? currentNode.parentNode : targetNode,
-			currentNode.parentNode,
+			isDirectChild ? currentNode.parentElement : targetNode,
+			currentNode.parentElement,
 			result.matches ? selectorParts.slice(1) : selectorParts,
 			priorityWeight + result.priorityWeight
 		);
diff --git a/packages/happy-dom/test/nodes/element/Element.test.ts b/packages/happy-dom/test/nodes/element/Element.test.ts
index 3d0489872..0d6b551a7 100644
--- a/packages/happy-dom/test/nodes/element/Element.test.ts
+++ b/packages/happy-dom/test/nodes/element/Element.test.ts
@@ -698,6 +698,7 @@ describe('Element', () => {
 		it('Checks if the element matches with a descendant combinator', () => {
 			const grandparentElement = document.createElement('div');
 			grandparentElement.setAttribute('role', 'alert');
+			document.appendChild(grandparentElement);
 
 			const parentElement = document.createElement('div');
 			parentElement.setAttribute('role', 'status');
@@ -709,6 +710,7 @@ describe('Element', () => {
 
 			expect(element.matches('div[role="alert"] div.active')).toBe(true);
 			expect(element.matches('div[role="article"] div.active')).toBe(false);
+			expect(element.matches('.nonexistent-class div.active')).toBe(false);
 		});
 
 		it('Checks if the element matches with a child combinator', () => {
diff --git a/packages/happy-dom/test/nodes/node/Node.test.ts b/packages/happy-dom/test/nodes/node/Node.test.ts
index 53ed11f1e..57c7a5173 100644
--- a/packages/happy-dom/test/nodes/node/Node.test.ts
+++ b/packages/happy-dom/test/nodes/node/Node.test.ts
@@ -196,6 +196,14 @@ describe('Node', () => {
 
 			expect(text.parentElement).toBe(null);
 		});
+
+		it('Returns null if parent node is not an element.', () => {
+			const htmlElement = document.createElement('html');
+			document.appendChild(htmlElement);
+
+			expect(htmlElement.parentNode).toBe(document);
+			expect(htmlElement.parentElement).toBe(null);
+		});
 	});
 
 	describe('get baseURI()', () => {