diff --git a/inc/container.class.php b/inc/container.class.php
index 6f38c4dd..171b95e7 100644
--- a/inc/container.class.php
+++ b/inc/container.class.php
@@ -241,6 +241,7 @@ public static function installBaseData(Migration $migration, $version)
                     $update_data = [
                         'id'        => $container['id'],
                         'itemtypes' => $itemtypes,
+                        'label'     => $container['label'],
                     ];
                     if ($container_name !== $container['name']) {
                         $update_data['name'] = $container_name;
@@ -648,7 +649,12 @@ public function defineTabs($options = [])
 
     public function prepareInputForUpdate($input)
     {
-        return PluginFieldsToolbox::prepareLabel($input);
+        // if label not empty, prepare name from label
+        if (isset($input['label']) && !empty($input['label'])) {
+            $input['label'] = PluginFieldsToolbox::sanitizeLabel((string) ($input['label'] ?? ''));
+        }
+
+        return $input;
     }
 
     public function prepareInputForAdd($input)