diff --git a/packages/global-registrator/src/GlobalRegistrator.ts b/packages/global-registrator/src/GlobalRegistrator.ts
index 6cc615da5..c0854cf54 100644
--- a/packages/global-registrator/src/GlobalRegistrator.ts
+++ b/packages/global-registrator/src/GlobalRegistrator.ts
@@ -11,7 +11,7 @@ export default class GlobalRegistrator {
 	 */
 	public static register(): void {
 		if (this.registered.length) {
-			throw new Error('Failed to registered. Happy DOM has already been globally registered.');
+			throw new Error('Failed to register. Happy DOM has already been globally registered.');
 		}
 		const window = new GlobalWindow();
 		for (const key of Object.keys(window)) {
@@ -26,9 +26,9 @@ export default class GlobalRegistrator {
 	 * Registers Happy DOM globally.
 	 */
 	public static unregister(): void {
-		if (this.registered.length) {
+		if (!this.registered.length) {
 			throw new Error(
-				'Failed to unregistered. Happy DOM has not previously been globally registered.'
+				'Failed to unregister. Happy DOM has not previously been globally registered.'
 			);
 		}
 		for (const key of this.registered) {
diff --git a/packages/global-registrator/test/react/React.test.tsx b/packages/global-registrator/test/react/React.test.tsx
index 0d371d53c..3130031c0 100644
--- a/packages/global-registrator/test/react/React.test.tsx
+++ b/packages/global-registrator/test/react/React.test.tsx
@@ -26,3 +26,5 @@ function unmountReactComponent(): void {
 
 mountReactComponent();
 unmountReactComponent();
+
+GlobalRegistrator.unregister();