From 1ccff9739f04775c5b576936f0bf96a35fef1448 Mon Sep 17 00:00:00 2001
From: Andrey Kutejko <andy128k@gmail.com>
Date: Wed, 13 Mar 2019 21:52:01 +0100
Subject: [PATCH] fix default value

---
 ipf/form/field/choice.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ipf/form/field/choice.php b/ipf/form/field/choice.php
index 368caf0..10457e1 100644
--- a/ipf/form/field/choice.php
+++ b/ipf/form/field/choice.php
@@ -9,7 +9,7 @@ class IPF_Form_Field_Choice extends IPF_Form_Field
     {
         parent::clean($value);
         if (in_array($value, $this->empty_values)) {
-            return '';
+            return null;
         }
         if (!$this->validValue($value))
             throw new IPF_Exception_Form(__('Invalid choice'));
-- 
2.49.0