diff --git a/packages/happy-dom/src/nodes/element/DOMRect.ts b/packages/happy-dom/src/nodes/element/DOMRect.ts
index 86d433a6c..26bffb801 100644
--- a/packages/happy-dom/src/nodes/element/DOMRect.ts
+++ b/packages/happy-dom/src/nodes/element/DOMRect.ts
@@ -1,5 +1,6 @@
-import DOMRectReadOnly, { IDOMRectInit } from './DOMRectReadOnly.js';
+import DOMRectReadOnly from './DOMRectReadOnly.js';
 import * as PropertySymbol from '../../PropertySymbol.js';
+import IDOMRectInit from './IDOMRectInit.js';
 
 /* eslint-disable jsdoc/require-jsdoc */
 
diff --git a/packages/happy-dom/src/nodes/element/DOMRectReadOnly.ts b/packages/happy-dom/src/nodes/element/DOMRectReadOnly.ts
index 65c8bc334..5ca15808b 100644
--- a/packages/happy-dom/src/nodes/element/DOMRectReadOnly.ts
+++ b/packages/happy-dom/src/nodes/element/DOMRectReadOnly.ts
@@ -1,4 +1,5 @@
 import * as PropertySymbol from '../../PropertySymbol.js';
+import IDOMRectInit from './IDOMRectInit.js';
 
 /* eslint-disable jsdoc/require-jsdoc */
 
@@ -77,10 +78,3 @@ export default class DOMRectReadOnly implements IDOMRectInit {
 		return new DOMRectReadOnly(other.x, other.y, other.width, other.height);
 	}
 }
-
-export interface IDOMRectInit {
-	readonly x: number;
-	readonly y: number;
-	readonly width: number;
-	readonly height: number;
-}
diff --git a/packages/happy-dom/src/nodes/element/IDOMRectInit.ts b/packages/happy-dom/src/nodes/element/IDOMRectInit.ts
new file mode 100644
index 000000000..10cbd1780
--- /dev/null
+++ b/packages/happy-dom/src/nodes/element/IDOMRectInit.ts
@@ -0,0 +1,6 @@
+export default interface IDOMRectInit {
+	readonly x: number;
+	readonly y: number;
+	readonly width: number;
+	readonly height: number;
+}
diff --git a/packages/happy-dom/test/nodes/element/DOMRectReadOnly.test.ts b/packages/happy-dom/test/nodes/element/DOMRectReadOnly.test.ts
index c179eedaf..6e712107b 100644
--- a/packages/happy-dom/test/nodes/element/DOMRectReadOnly.test.ts
+++ b/packages/happy-dom/test/nodes/element/DOMRectReadOnly.test.ts
@@ -13,6 +13,10 @@ describe('DOMRectReadOnly', () => {
 			expect(rect.y).toBe(2);
 			expect(rect.width).toBe(3);
 			expect(rect.height).toBe(4);
+			expect(rect.top).toBe(2);
+			expect(rect.right).toBe(4);
+			expect(rect.bottom).toBe(6);
+			expect(rect.left).toBe(1);
 
 			const rect2 = new DOMRectReadOnly(null, null, null, 4);
 			expect(rect2.x).toBe(0);
@@ -103,6 +107,10 @@ describe('DOMRectReadOnly', () => {
 			expect(rect.y).toBe(2);
 			expect(rect.width).toBe(3);
 			expect(rect.height).toBe(4);
+			expect(rect.top).toBe(2);
+			expect(rect.right).toBe(4);
+			expect(rect.bottom).toBe(6);
+			expect(rect.left).toBe(1);
 		});
 	});