diff --git a/lib/Entities/CustomFieldEntity.php b/lib/Entities/CustomFieldEntity.php
index fb535f2cce..6d1eb45fde 100644
--- a/lib/Entities/CustomFieldEntity.php
+++ b/lib/Entities/CustomFieldEntity.php
@@ -13,6 +13,13 @@ use MailPoetVendor\Symfony\Component\Validator\Constraints as Assert;
  * @ORM\Table(name="custom_fields")
  */
 class CustomFieldEntity {
+  public const TYPE_DATE = 'date';
+  public const TYPE_TEXT = 'text';
+  public const TYPE_TEXTAREA = 'textarea';
+  public const TYPE_RADIO = 'radio';
+  public const TYPE_CHECKBOX = 'checkbox';
+  public const TYPE_SELECT = 'select';
+
   use AutoincrementedIdTrait;
   use CreatedAtTrait;
   use UpdatedAtTrait;
diff --git a/lib/Models/CustomField.php b/lib/Models/CustomField.php
index 63297e33e8..40d13264f9 100644
--- a/lib/Models/CustomField.php
+++ b/lib/Models/CustomField.php
@@ -2,6 +2,7 @@
 
 namespace MailPoet\Models;
 
+use MailPoet\Entities\CustomFieldEntity;
 use MailPoet\Util\DateConverter;
 use MailPoet\WP\Functions as WPFunctions;
 
@@ -13,12 +14,12 @@ use MailPoet\WP\Functions as WPFunctions;
 
 class CustomField extends Model {
   public static $_table = MP_CUSTOM_FIELDS_TABLE; // phpcs:ignore PSR2.Classes.PropertyDeclaration
-  const TYPE_DATE = 'date';
-  const TYPE_TEXT = 'text';
-  const TYPE_TEXTAREA = 'textarea';
-  const TYPE_RADIO = 'radio';
-  const TYPE_CHECKBOX = 'checkbox';
-  const TYPE_SELECT = 'select';
+  const TYPE_DATE = CustomFieldEntity::TYPE_DATE;
+  const TYPE_TEXT = CustomFieldEntity::TYPE_TEXT;
+  const TYPE_TEXTAREA = CustomFieldEntity::TYPE_TEXTAREA;
+  const TYPE_RADIO = CustomFieldEntity::TYPE_RADIO;
+  const TYPE_CHECKBOX = CustomFieldEntity::TYPE_CHECKBOX;
+  const TYPE_SELECT = CustomFieldEntity::TYPE_SELECT;
 
   public function __construct() {
     parent::__construct();