diff --git a/modules/ddt/plugins/ddt.anagrafiche.php b/modules/ddt/plugins/ddt.anagrafiche.php
index 2667350f4..c90e57dc9 100644
--- a/modules/ddt/plugins/ddt.anagrafiche.php
+++ b/modules/ddt/plugins/ddt.anagrafiche.php
@@ -40,7 +40,7 @@ if (!empty($rsddt)) {
                 '.Modules::link('Ddt di vendita', $rsddt[$i]['idddt'], $rsddt[$i]['numero_esterno']).'
             </td>
             <td>
-                <span>'.Translator::dateToLocale($rsddt[$i]['data']).'</span>
+                <span>'.(!empty($rsddt[$i]['data']) ? Translator::dateToLocale($rsddt[$i]['data']) : '').'</span>
             </td>
             <td>
                 <span>'.$rsddt[$i]['descrizione'].'</span>
diff --git a/update/2_3.php b/update/2_3.php
index 1db104e33..1c061e687 100644
--- a/update/2_3.php
+++ b/update/2_3.php
@@ -153,7 +153,8 @@ if(!empty($fk)){
     $database->query("ALTER TABLE `in_interventi_tecnici` DROP FOREIGN KEY `in_interventi_tecnici_ibfk_1`");
 }
 
-$database->query("ALTER TABLE `in_interventi` CHANGE `idintervento` `codice` varchar(25) NOT NULL UNIQUE");
+$database->query("ALTER TABLE `in_interventi` DROP PRIMARY KEY, CHANGE `idintervento` `codice` varchar(25) NOT NULL UNIQUE, ADD PRIMARY KEY (`id`)");
+$database->query("DROP INDEX primary_key ON `in_interventi`");
 
 // Fix dei timestamp delle tabelle mg_prodotti, mg_movimenti, zz_logs e zz_files
 $database->query('UPDATE `mg_prodotti` SET `created_at` = `data`, `updated_at` = `data`');
diff --git a/update/2_3.sql b/update/2_3.sql
index deebec717..767773c1e 100644
--- a/update/2_3.sql
+++ b/update/2_3.sql
@@ -15,7 +15,9 @@ ALTER TABLE `zz_modules` CHANGE `module_dir` `directory` varchar(50) NOT NULL, C
 UPDATE `zz_modules` SET `name` = REPLACE(`name`, '&agrave;', 'à'), `title` = REPLACE(`title`, '&agrave;', 'à');
 
 -- Adattamento della tabella in_interventi
-ALTER TABLE `in_interventi` DROP PRIMARY KEY, ADD `id` int(11) NOT NULL AUTO_INCREMENT FIRST, ADD PRIMARY KEY (`id`);
+ALTER TABLE `in_interventi` ADD `id` int(11) NOT NULL;
+CREATE INDEX primary_key ON `in_interventi` (`id`);
+ALTER TABLE `in_interventi` CHANGE `id` `id` int(11) NOT NULL AUTO_INCREMENT FIRST;
 
 ALTER TABLE `my_impianti_interventi` DROP PRIMARY KEY;