diff --git a/app/Http/Controllers/ArticleController.php b/app/Http/Controllers/ArticleController.php
index 4c2b8053..43306bd5 100755
--- a/app/Http/Controllers/ArticleController.php
+++ b/app/Http/Controllers/ArticleController.php
@@ -42,7 +42,7 @@ class ArticleController extends Controller
                          DB::raw('COALESCE(o.totaleVenduti, 0) as totaleVenduti'))
                 ->where('DescrizioneStatoProdotto','In commercio')
                 ->where('DescrizioneTipologia','Libri')
-                ->where(DB::raw('CONVERT(INT, QtaDisponibile)'),'!=',0)
+                ->where(DB::raw('CONVERT(INT, o.QtaDisponibile)'),'<>',0)
                 ->orderBy('totaleVenduti', 'desc')
                 ->get();