diff --git a/openerp/addons/base/ir/ir_mail_server.py b/openerp/addons/base/ir/ir_mail_server.py
index 0c3240b66ae..91948a7ea99 100644
--- a/openerp/addons/base/ir/ir_mail_server.py
+++ b/openerp/addons/base/ir/ir_mail_server.py
@@ -383,6 +383,7 @@ class ir_mail_server(osv.osv):
 
         # Do not actually send emails in testing mode!
         if getattr(threading.currentThread(), 'testing', False):
+            _logger.log(logging.TEST, "skip sending email in test mode")
             return message['Message-Id']
 
         # Get SMTP Server Details from Mail Server