diff --git a/debian/debian_config.py b/debian/debian_config.py
index 2625333e..88bb4bac 100644
--- a/debian/debian_config.py
+++ b/debian/debian_config.py
@@ -10,7 +10,7 @@ PROJECT_NAME = 'passerelle'
 #
 # hobotization (multitenant)
 #
-execfile('/usr/lib/hobo/debian_config_common.py')
+exec(open('/usr/lib/hobo/debian_config_common.py').read())
 
 # disable django-mellon autologin
 MELLON_OPENED_SESSION_COOKIE_NAME = None
@@ -22,7 +22,7 @@ LOGGING['loggers']['suds'] = {
     'propagate': True,
 }
 
-execfile('/etc/%s/settings.py' % PROJECT_NAME)
+exec(open('/etc/%s/settings.py' % PROJECT_NAME).read())
 
 # run additional settings snippets
-execfile('/usr/lib/hobo/debian_config_settings_d.py')
+exec(open('/usr/lib/hobo/debian_config_settings_d.py').read())
diff --git a/passerelle/settings.py b/passerelle/settings.py
index fd18d65f..e3386a69 100644
--- a/passerelle/settings.py
+++ b/passerelle/settings.py
@@ -246,4 +246,4 @@ LOGGING = {
 local_settings_file = os.environ.get('PASSERELLE_SETTINGS_FILE',
         os.path.join(os.path.dirname(__file__), 'local_settings.py'))
 if os.path.exists(local_settings_file):
-    execfile(local_settings_file)
+    exec(open(local_settings_file).read())