diff --git a/doc/manual_installation/postfix.rst b/doc/manual_installation/postfix.rst
index d742e566b..3a5c4589e 100644
--- a/doc/manual_installation/postfix.rst
+++ b/doc/manual_installation/postfix.rst
@@ -41,7 +41,9 @@ Use the following configuration in the :file:`/etc/postfix/main.cf` file
   virtual_alias_maps = <driver>:/etc/postfix/sql-aliases.cf
 
   relay_domains = <driver>:/etc/postfix/sql-relaydomains.cf
-  transport_maps = <driver>:/etc/postfix/sql-spliteddomains-transport.cf
+  transport_maps =
+    <driver>:/etc/postfix/sql-transport.cf
+    <driver>:/etc/postfix/sql-spliteddomains-transport.cf
 
   smtpd_recipient_restrictions =
         # ...
diff --git a/doc/upgrade.rst b/doc/upgrade.rst
index 5ff4174e5..8839c4c64 100644
--- a/doc/upgrade.rst
+++ b/doc/upgrade.rst
@@ -100,26 +100,18 @@ First of all, update postfix map files as follows:
                 
 Then, modify postfix's configuration as follows::
 
-If transport_maps contains sql-relaydomains-transport.cf, remove it.
-
-Finally, reload postfix.
-
-1.9.2
-=====
-
-First of all, update postfix map files as follows:
-
-.. sourcecode:: bash
-
-   > python manage.py generate_postfix_maps --destdir <path>
-                
-Then, modify postfix's configuration as follows::
-
-  smtpd_sender_login_maps =
+    smtpd_sender_login_maps =
       <driver>:<path>/sql-sender-login-map.cf
 
+    transport_maps =
+      <driver>:<path>/sql-transport.cf
+      <driver>:<path>/sql-spliteddomains-transport.cf
+      # other map files...
+
 Replace ``<driver>`` and ``<path>`` by your values.
 
+If ``transport_maps`` contains ``sql-relaydomains-transport.cf``, remove it.
+
 Finally, reload postfix.
 
 1.9.0