diff --git a/src/Entity.php b/src/Entity.php
index d3f527d49eb..c62815b7b53 100644
--- a/src/Entity.php
+++ b/src/Entity.php
@@ -329,7 +329,6 @@ public function prepareInputForAdd($input)
     {
         /** @var \DBmysql $DB */
         global $DB;
-
         $input['name'] = isset($input['name']) ? trim($input['name']) : '';
         if (empty($input["name"])) {
             Session::addMessageAfterRedirect(
diff --git a/src/Features/Clonable.php b/src/Features/Clonable.php
index ef175440a6e..fb2b063f015 100644
--- a/src/Features/Clonable.php
+++ b/src/Features/Clonable.php
@@ -76,7 +76,8 @@ private function cleanCloneInput(array $input): array
             'date_mod',
             'date_creation',
             'template_name',
-            'is_template'
+            'is_template',
+            'sons_cache',
         ];
         foreach ($properties_to_clean as $property) {
             if (array_key_exists($property, $input)) {