diff --git a/application/controllers/DashboardController.php b/application/controllers/DashboardController.php
index a3967d1..3a25e36 100644
--- a/application/controllers/DashboardController.php
+++ b/application/controllers/DashboardController.php
@@ -175,16 +175,20 @@ class DashboardController extends BaseController
         );
         $myScore = $mine ? (float) $mine['overall_score'] : null;
 
+        // Esattamente UN punteggio per org (ultimo completato, tie-break su id): la subquery
+        // correlata evita il duplicato che il JOIN su MAX(completed_at) produceva quando due
+        // assessment della stessa org condividono identico timestamp.
         $rows = Database::fetchAll(
             "SELECT a.overall_score
              FROM assessments a
-             JOIN (
-                SELECT organization_id, MAX(completed_at) mx
-                FROM assessments WHERE status='completed'
-                GROUP BY organization_id
-             ) last ON last.organization_id = a.organization_id AND last.mx = a.completed_at
              JOIN organizations o ON o.id = a.organization_id
-             WHERE o.is_active = 1 AND o.sector = ? AND a.status='completed' AND a.overall_score IS NOT NULL",
+             WHERE o.is_active = 1 AND o.sector = ? AND a.status='completed' AND a.overall_score IS NOT NULL
+               AND a.id = (
+                   SELECT a2.id FROM assessments a2
+                   WHERE a2.organization_id = a.organization_id
+                     AND a2.status='completed' AND a2.overall_score IS NOT NULL
+                   ORDER BY a2.completed_at DESC, a2.id DESC LIMIT 1
+               )",
             [$sector]
         );
         $scores = array_map(fn($r) => (float) $r['overall_score'], $rows);