diff --git a/src/app/services/i18n.service.ts b/src/app/services/i18n.service.ts
index f2d9f45..cf58243 100644
--- a/src/app/services/i18n.service.ts
+++ b/src/app/services/i18n.service.ts
@@ -98,7 +98,7 @@ export class I18nService {
     insertArguments(label: string, args: string[]) {
         if (args) {
             for (let index in args) {
-                label = label.replace(`{${index}}`, this.get(args[ index ], []));
+                label = label.replace(`{${index}}`, this.get(args[ index ], null));
             }
         }
         return label;