diff --git a/src/Columns.php b/src/Columns.php
index 3c26821..7c69097 100644
--- a/src/Columns.php
+++ b/src/Columns.php
@@ -131,7 +131,7 @@ public function onsubmitCallback($dc)
 				foreach ($GLOBALS['TL_DCA']['tl_content']['fields'] as $field => $config) {
 					if (array_key_exists('default', $config)) {
 						$set[$field] = \is_array($config['default']) ? serialize($config['default']) : $config['default'];
-						if ($GLOBALS['TL_DCA']['tl_content']['fields'][$field]['eval']['encrypt']) {
+						if ($GLOBALS['TL_DCA']['tl_content']['fields'][$field]['eval']['encrypt'] ?? false) {
 							$set[$field] = Encryption::encrypt($set[$field]);
 						}
 					}