diff --git a/include/init/requirements.php b/include/init/requirements.php
index c28bbe093..e03caea5b 100755
--- a/include/init/requirements.php
+++ b/include/init/requirements.php
@@ -174,16 +174,18 @@ foreach ($settings as $name => $values) {
 }
 
 // MySQL
-$db = [
+if ($database->isInstalled()){
+    $db = [
 
-    'mysql_version' => [
-        'type' => 'mysql',
-        'description' => '5.7.x - 8.0.x',
-        'minimum' => '5.7.0',
-        'maximum' => '8.0.99',
-    ],
+        'mysql_version' => [
+            'type' => 'mysql',
+            'description' => '5.7.x - 8.0.x',
+            'minimum' => '5.7.0',
+            'maximum' => '8.0.99',
+        ],
 
-];
+    ];
+}
 
 foreach ($db as $name => $values) {
     $description = $values['description'];
@@ -222,6 +224,7 @@ foreach ($dirs as $name => $description) {
     ];
 }
 
+
 $requirements = [
     tr('Apache') => $apache,
     tr('PHP (_VERSION_ _SUPPORTED_)', [
@@ -232,6 +235,10 @@ $requirements = [
     tr('Percorsi di servizio') => $directories,
 ];
 
+if (!$database->isInstalled() || empty($mysql)){
+    unset($requirements['MySQL']);
+}
+
 
 // Tabelle di riepilogo
 foreach ($requirements as $key => $values) {
diff --git a/modules/primanota/edit.php b/modules/primanota/edit.php
index 6ce100ef4..16c1c70a1 100755
--- a/modules/primanota/edit.php
+++ b/modules/primanota/edit.php
@@ -56,19 +56,20 @@ include_once __DIR__.'/../../core.php';
             <div class="col-md-2">
                 <br>
                 <div class="btn-group">
-                    <span class="btn btn-info" style="cursor:default;" ><i class="fa fa-chevron-left"></i> <?php echo tr('Più fatture collegate'); ?></span>
-                 
-                    <a type="button" class="btn btn-info dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
-                        <span class="caret"></span>
+                    
+
+                    <button type="button" class="btn btn-info dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+                        <?php echo tr('Più fatture collegate'); ?>... <span class="caret"></span>
                         <span class="sr-only">Toggle Dropdown</span>
-                    </a>
+                    </button>
+
 
                     <ul class="dropdown-menu">
         <?php
             for ($i = 0; $i < sizeof($rs_doc); ++$i) {
                 $rs = $dbo->fetchArray('SELECT dir FROM co_tipidocumento INNER JOIN co_documenti ON co_tipidocumento.id=co_documenti.idtipodocumento WHERE co_documenti.id='.prepare($rs_doc[$i]['iddocumento']));
                 $modulo = ($rs[0]['dir'] == 'entrata') ? 'Fatture di vendita' : 'Fatture di acquisto'; ?>
-                        <li><a href="<?php echo base_path(); ?>/editor.php?id_module=<?php echo Modules::get($modulo)['id']; ?>&id_record=<?php echo $rs_doc[$i]['iddocumento']; ?>" class="dropdown-item"><?php echo tr('Vai alla fattura n. '.$rs_doc[$i]['numero']); ?></a></li>
+                        <li><a href="<?php echo base_path(); ?>/editor.php?id_module=<?php echo Modules::get($modulo)['id']; ?>&id_record=<?php echo $rs_doc[$i]['iddocumento']; ?>" class="dropdown-item"><i class="fa fa-chevron-left"></i> <?php echo tr('Vai alla fattura n. '.$rs_doc[$i]['numero']); ?></a></li>
         <?php
             } ?>
                     </ul>