diff --git a/htdocs/api/class/api.class.php b/htdocs/api/class/api.class.php
index 80a608a0581..c8ff1078977 100644
--- a/htdocs/api/class/api.class.php
+++ b/htdocs/api/class/api.class.php
@@ -113,6 +113,7 @@ class DolibarrApi
 
 		unset($object->error);
 		unset($object->errors);
+		unset($object->errorhidden);
 
 		unset($object->ref_previous);
 		unset($object->ref_next);