diff --git a/openerp/tools/yaml_import.py b/openerp/tools/yaml_import.py
index 91cdda1b896..0ec52a9bdf6 100644
--- a/openerp/tools/yaml_import.py
+++ b/openerp/tools/yaml_import.py
@@ -164,6 +164,8 @@ class YamlInterpreter(object):
             self.logger.log(logging.ERROR, 'id: %s is to long (max: 64)', id)
 
     def get_id(self, xml_id):
+        if xml_id == None:
+            return None
         if not xml_id:
             raise YamlImportException("The xml_id should be a non empty string.")
         if isinstance(xml_id, types.IntType):