diff --git a/weboob/tools/application/console.py b/weboob/tools/application/console.py
index badc314d..1811c099 100644
--- a/weboob/tools/application/console.py
+++ b/weboob/tools/application/console.py
@@ -1,16 +1,16 @@
 # -*- coding: utf-8 -*-
 
 # Copyright(C) 2010  Romain Bignon, Julien Hébert, Christophe Benz
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, version 3 of the License.
-# 
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
@@ -161,6 +161,8 @@ class ConsoleApplication(BaseApplication):
             print command_result
         elif isinstance(command_result, int):
             return command_result
+        elif command_result is None:
+            return 0
         else:
             try:
                 print unicode(command_result)