diff --git a/tests/unit/components/NcDateTime/NcDateTime.spec.js b/tests/unit/components/NcDateTime/NcDateTime.spec.js
index 0cd58f1200..8091a3c408 100644
--- a/tests/unit/components/NcDateTime/NcDateTime.spec.js
+++ b/tests/unit/components/NcDateTime/NcDateTime.spec.js
@@ -71,18 +71,18 @@ describe('NcDateTime.vue', () => {
 		expect(wrapper.element.textContent).toMatch(wrapper.element.getAttribute('title'))
 	})
 
-	describe('Work with different locales', () => {
+	describe('Work with different languages', () => {
 		beforeAll(() => {
-			// mock the locale
-			document.documentElement.dataset.locale = 'de_DE'
+			// mock the language
+			document.documentElement.lang = 'de'
 		})
 		afterAll(() => {
 			// revert mock
-			document.documentElement.dataset.locale = 'en'
+			document.documentElement.lang = 'en'
 		})
 
 		/**
-		 * Use German locale as it uses a different date format than English
+		 * Use German language as it uses a different date format than English
 		 */
 		it('', () => {
 			const time = Date.UTC(2023, 5, 23, 14, 30)