diff --git a/src/abstractions/i18n.service.ts b/src/abstractions/i18n.service.ts
index f57783b474..fa2019202c 100644
--- a/src/abstractions/i18n.service.ts
+++ b/src/abstractions/i18n.service.ts
@@ -1,5 +1,6 @@
 export abstract class I18nService {
     locale: string;
+    supportedTranslationLocales: string[];
     translationLocale: string;
     collator: Intl.Collator;
     t: (id: string, p1?: string, p2?: string, p3?: string) => string;
diff --git a/src/services/i18n.service.ts b/src/services/i18n.service.ts
index 9b9aaea68f..41609ce602 100644
--- a/src/services/i18n.service.ts
+++ b/src/services/i18n.service.ts
@@ -2,11 +2,11 @@ import { I18nService as I18nServiceAbstraction } from '../abstractions/i18n.serv
 
 export class I18nService implements I18nServiceAbstraction {
     locale: string;
+    // First locale is the default (English)
+    supportedTranslationLocales: string[] = ['en'];
     translationLocale: string;
     collator: Intl.Collator;
 
-    // First locale is the default (English)
-    protected supportedTranslationLocales: string[] = ['en'];
     protected inited: boolean;
     protected defaultMessages: any = {};
     protected localeMessages: any = {};