diff --git a/lib/core/src/lib/common/models/default-languages.model.ts b/lib/core/src/lib/common/models/default-languages.model.ts
index ba8e3e8c30..44500f418c 100644
--- a/lib/core/src/lib/common/models/default-languages.model.ts
+++ b/lib/core/src/lib/common/models/default-languages.model.ts
@@ -20,6 +20,7 @@ import { LanguageItem } from '../services/language-item.interface';
 export const DEFAULT_LANGUAGE_LIST: LanguageItem[] = [
     { key: 'de', label: 'Deutsch' },
     { key: 'en', label: 'English' },
+    { key: 'en-AU', label: 'English (Australia)' },
     { key: 'es', label: 'Español' },
     { key: 'fr', label: 'Français' },
     { key: 'it', label: 'Italiano' },
diff --git a/lib/core/src/lib/mock/language.service.mock.ts b/lib/core/src/lib/mock/language.service.mock.ts
index 599c9855fe..4a3e486672 100644
--- a/lib/core/src/lib/mock/language.service.mock.ts
+++ b/lib/core/src/lib/mock/language.service.mock.ts
@@ -25,6 +25,7 @@ export class LanguageServiceMock implements LanguageServiceInterface {
     private readonly languages = new BehaviorSubject<LanguageItem[]>([
         { key: 'de', label: 'Deutsch' },
         { key: 'en', label: 'English' },
+        { key: 'en-AU', label: 'English (Australia)' },
         { key: 'es', label: 'Español' },
         { key: 'fr', label: 'Français' },
         { key: 'it', label: 'Italiano' },