diff --git a/src/app/services/i18n.service.ts b/src/app/services/i18n.service.ts
index 38cca7a..b641023 100644
--- a/src/app/services/i18n.service.ts
+++ b/src/app/services/i18n.service.ts
@@ -75,13 +75,13 @@ export class I18nService {
     getInternal(key, args: string[], from, path, empty : boolean): string {
         key += '';
         if (!from) {
-            return empty ? this.empty(key, args, path) : key;
+            return empty ? this.empty(key, args, path) : (key || "");
         } else if (from[ key ]) {
             if (typeof from[ key ] === 'object') {
                 if (from[ key ][ "." ]) {
                     return this.insertArguments(from[ key ][ "." ], args);
                 }
-                return empty ? this.empty(key, args, path) : key;
+                return empty ? this.empty(key, args, path) : (key || "");
             }
             return this.insertArguments(from[ key ], args);
         } else {
@@ -92,7 +92,7 @@ export class I18nService {
             }
         }
 
-        return empty ? this.empty(key, args, path) : key;
+        return empty ? this.empty(key, args, path) : (key || "");
     }
 
     empty(key, args: string[], path: string): string {