diff --git a/projects/multi-http-loader/src/lib/multi-http-loader.ts b/projects/multi-http-loader/src/lib/multi-http-loader.ts
index f7a08bf..cfedb18 100644
--- a/projects/multi-http-loader/src/lib/multi-http-loader.ts
+++ b/projects/multi-http-loader/src/lib/multi-http-loader.ts
@@ -12,7 +12,7 @@ export interface TranslationResource {
 export class MultiTranslateHttpLoader implements TranslateLoader {
   constructor(
     private _handler: HttpBackend,
-    private _resourcesPrefix: string[] | TranslationResource[],
+    private _resourcesPrefix: (string | TranslationResource)[],
   ) {}
 
   public getTranslation(lang: string): Observable<any> {
@@ -20,7 +20,7 @@ export class MultiTranslateHttpLoader implements TranslateLoader {
       let path: string
 
       if (typeof resource === 'string') path = `${resource}${lang}.json`
-      else path = `${resource.prefix}${lang}${resource.suffix || '.json'}`
+      else path = `${resource.prefix}${lang}${resource.suffix ?? '.json'}`
 
       return new HttpClient(this._handler).get(path).pipe(
         catchError((res) => {