diff --git a/README.md b/README.md
index fa862caf7..344593195 100644
--- a/README.md
+++ b/README.md
@@ -194,6 +194,7 @@ If you have a need for a missing feature or if you have found a bug, please let
 
 | Version | Date       | Description      |
 | ------- | ---------- | ---------------- |
+| 0.3.1   | 2019-10-07 | Fixes bug where global.Error is undefined. (#6)
 | 0.3.0   | 2019-10-06 | Adds support for scrollTop, scrollLeft, scrollTo(), offsetLeft, offsetTop offsetHeight, offsetWidth. |
 | 0.2.16  | 2019-10-06 | Major bug fixes with server side rendering. |
 | 0.2.0   | 2019-09-20 | Adds support for SVGSVGElement, SVGElement and SVGGraphicsElement. |
diff --git a/src/Window.ts b/src/Window.ts
index 0b5c41485..1c8f7e6f9 100644
--- a/src/Window.ts
+++ b/src/Window.ts
@@ -73,11 +73,8 @@ export default class Window extends EventTarget {
 
 		// Copies functionality from global (like eval, String, Array, Object etc.)
 		if (global !== undefined) {
-			for (const key of Object.keys(global)) {
-				if (typeof this[key] === 'undefined') {
-					this[key] = global[key];
-				}
-			}
+			const descriptors = Object.getOwnPropertyDescriptors(global);
+			Object.defineProperties(this, descriptors);
 		}
 	}