diff --git a/app/Models/Code.php b/app/Models/Code.php
index 70c4447..9ff810e 100644
--- a/app/Models/Code.php
+++ b/app/Models/Code.php
@@ -161,10 +161,11 @@ class Code extends Model
         $settings = app(Settings::class);
         return Attribute::make(
             get: fn (): bool => $settings->nb_unique_code_use ?
-                Participation::where(
-                    'code_unique_id',
-                    $this->id
-                )->count() >= $settings->nb_unique_code_use : false
+                Code::query()->where('id', $this->id)->whereHas(
+                    'participations',
+                    operator: '>=',
+                    count: $settings->nb_unique_code_use
+                )->count() : false
         );
     }
 }