diff --git a/modules/contratti/actions.php b/modules/contratti/actions.php
index bfd355048..fe3c5c5ba 100644
--- a/modules/contratti/actions.php
+++ b/modules/contratti/actions.php
@@ -132,6 +132,7 @@ switch (post('op')) {
      // Duplica contratto
     case 'copy':
         $new = $contratto->replicate();
+        $new->numero = Contratto::getNextNumero();
         $new->idstato = 1;
         $new->save();
 
diff --git a/modules/preventivi/actions.php b/modules/preventivi/actions.php
index 482b5138b..0475eeee2 100644
--- a/modules/preventivi/actions.php
+++ b/modules/preventivi/actions.php
@@ -100,6 +100,7 @@ switch (post('op')) {
     // Duplica preventivo
     case 'copy':
         $new = $preventivo->replicate();
+        $new->numero = Preventivo::getNextNumero();
         $new->idstato = 1;
         $new->master_revision = $preventivo->id;
         $new->save();