diff --git a/openerp/tools/yaml_import.py b/openerp/tools/yaml_import.py
index 8f98573c41382700173a4e050f39718e63fbdce4..b065294f7d79ab81d387eba98c2e6b64697c1603 100644
--- a/openerp/tools/yaml_import.py
+++ b/openerp/tools/yaml_import.py
@@ -452,7 +452,7 @@ class YamlInterpreter(object):
                         if key in fg:
                             record_dict[key] = process_val(key, val)
                         else:
-                            _logger.warning("The returning field '%s' from your on_change call '%s'"
+                            _logger.debug("The returning field '%s' from your on_change call '%s'"
                                             " does not exist either on the object '%s', either in"
                                             " the view '%s'",
                                             key, match.group(1), model._name, view_info['name'])