diff --git a/portail_citoyen_announces/transports.py b/portail_citoyen_announces/transports.py
index 6d90f8f..2acfcd4 100644
--- a/portail_citoyen_announces/transports.py
+++ b/portail_citoyen_announces/transports.py
@@ -199,7 +199,7 @@ class EmailTransport(object):
         ctx = Context({ 'announce': announce, 'site': site, 'category': category })
         subject = subject_template.render(ctx).replace('\r', '').replace('\n', '')
         body = body_template.render(ctx)
-        emails = self.get_emails(category)
+        emails = list(self.get_emails(category))
         logger.info(u'sending announce %(announce)s through %(mode)s to %(count)s emails',
                 dict(announce=announce, mode=self.identifier, count=len(emails)))
         try: