diff --git a/doc/src/sgml/protocol.sgml b/doc/src/sgml/protocol.sgml
index 6c14da0cc76..e74b5be1eff 100644
--- a/doc/src/sgml/protocol.sgml
+++ b/doc/src/sgml/protocol.sgml
@@ -3492,6 +3492,7 @@ psql "dbname=postgres replication=database" -c "IDENTIFY_SYSTEM;"
       <para>
        Boolean option to use binary transfer mode.  Binary mode is faster
        than the text mode but slightly less robust.
+       The default is <literal>off</literal>.
       </para>
      </listitem>
     </varlistentry>
@@ -3504,6 +3505,7 @@ psql "dbname=postgres replication=database" -c "IDENTIFY_SYSTEM;"
       <para>
        Boolean option to enable sending the messages that are written
        by <function>pg_logical_emit_message</function>.
+       The default is <literal>off</literal>.
       </para>
      </listitem>
     </varlistentry>
@@ -3533,6 +3535,7 @@ psql "dbname=postgres replication=database" -c "IDENTIFY_SYSTEM;"
       <para>
        Boolean option to enable two-phase transactions.   Minimum protocol
        version 3 is required to turn it on.
+       The default is <literal>off</literal>.
       </para>
      </listitem>
     </varlistentry>
@@ -3549,6 +3552,7 @@ psql "dbname=postgres replication=database" -c "IDENTIFY_SYSTEM;"
        to send the changes regardless of their origin.  This can be used
        to avoid loops (infinite replication of the same data) among
        replication nodes.
+       The default is <literal>any</literal>.
       </para>
      </listitem>
     </varlistentry>