diff --git a/public/userarea/partsTable.js b/public/userarea/partsTable.js
index dc4c0a5..a7ede09 100644
--- a/public/userarea/partsTable.js
+++ b/public/userarea/partsTable.js
@@ -1493,14 +1493,17 @@ $(document).ready(function () {
                 partMatrice[partNumber] = matrice.IdMatrice;
             } else {
                 // Aggiusta valore non valido
-                $select.val(null).trigger("change");
+				if (!fromFilter) $select.val(null).trigger("change");
+                
                 partMatrice[partNumber] = null;
             }
         } else {
-			$select.val(null).trigger("change");
+			$select.val(null).trigger("change", [{ skipHandler: true }]);
 		}
 
-        $select.on("change", function () {
+        $select.on("change", function (event, data) {
+			if (data && data?.skipHandler) return;
+			
             const idmatrice = $(this).val();
             const $row = $(this).closest("tr");
             const partId = $row.data("part-id");