diff --git a/doc/manual_installation/postfix.rst b/doc/manual_installation/postfix.rst
index 6d331addb..4d9d7e9ea 100644
--- a/doc/manual_installation/postfix.rst
+++ b/doc/manual_installation/postfix.rst
@@ -76,7 +76,7 @@ content to the :file:`/etc/postfix/main.cf` file::
 
     smtpd_recipient_restrictions =
         # ...
-        check_policy_service inet:127.0.0.1:9999
+        check_policy_service inet:localhost:9999
         # ...
 
 And reload postfix.
diff --git a/modoboa/policyd/management/commands/policy_daemon.py b/modoboa/policyd/management/commands/policy_daemon.py
index a454e032d..e0b135853 100644
--- a/modoboa/policyd/management/commands/policy_daemon.py
+++ b/modoboa/policyd/management/commands/policy_daemon.py
@@ -25,7 +25,7 @@ class Command(BaseCommand):
 
     def add_arguments(self, parser):
         """Add command line arguments."""
-        parser.add_argument("--host", type=str, default="127.0.0.1")
+        parser.add_argument("--host", type=str, default="localhost")
         parser.add_argument("--port", type=int, default=9999)
         parser.add_argument("--debug", action="store_true",
                             help="Enable debug mode")