diff --git a/htdocs/api/class/api.class.php b/htdocs/api/class/api.class.php
index 7aef2671c8d..9228c71ccbf 100644
--- a/htdocs/api/class/api.class.php
+++ b/htdocs/api/class/api.class.php
@@ -90,6 +90,8 @@ class DolibarrApi
         // Remove linkedObjects. We should already have linkedObjectIds that avoid huge responses
         unset($object->linkedObjects);
         
+        unset($object->fields);
+        
         unset($object->oldline);
         
         unset($object->error);