diff --git a/app/Http/Controllers/ArticleController.php b/app/Http/Controllers/ArticleController.php
index c972ffad..d10fadd5 100755
--- a/app/Http/Controllers/ArticleController.php
+++ b/app/Http/Controllers/ArticleController.php
@@ -11,7 +11,7 @@ use App\Article;
 
 class ArticleController extends Controller
 {
-    static public function queryArticlesSales()
+    private function queryArticlesSales()
     {
         try {
             $articoliVenduti = Article::join('T_WEB_Ordini', 'T_WEB_Articoli.idArticolo', '=', 'T_WEB_Ordini.codArticoloGM')
@@ -42,11 +42,11 @@ class ArticleController extends Controller
 
     }
 
-    public function showArticlesSales(Request $request): View
+    public function showArticlesSales(Request $request): Response
     {
         try {
 
-            $articoliVenduti = ArticleController::queryArticlesSales();
+            $articoliVenduti = $this->queryArticlesSales();
 
             return view('export_articles_sales', ['articoliVenduti' => $articoliVenduti]);
         } catch (\Exception $e) {