diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index 48ad9f6..c513eba 100644
*** a/doc/src/sgml/config.sgml
--- b/doc/src/sgml/config.sgml
*************** SET ENABLE_SEQSCAN TO OFF;
*** 1643,1649 ****
          commit. Therefore, the delay is only performed if at least
          <varname>commit_siblings</varname> other transactions are
          active at the instant that a server process has written its
!         commit record. The default is zero (no delay).
         </para>
        </listitem>
       </varlistentry>
--- 1643,1651 ----
          commit. Therefore, the delay is only performed if at least
          <varname>commit_siblings</varname> other transactions are
          active at the instant that a server process has written its
!         commit record. The default is zero (no delay). This parameter can only
!         be set in the <filename>postgresql.conf</> file or on the server
!         command line.
         </para>
        </listitem>
       </varlistentry>
*************** SET ENABLE_SEQSCAN TO OFF;
*** 1659,1665 ****
          before performing the <varname>commit_delay</> delay. A larger
          value makes it more probable that at least one other
          transaction will become ready to commit during the delay
!         interval. The default is five transactions.
         </para>
        </listitem>
       </varlistentry>
--- 1661,1669 ----
          before performing the <varname>commit_delay</> delay. A larger
          value makes it more probable that at least one other
          transaction will become ready to commit during the delay
!         interval. The default is five transactions. This parameter can only be
!         set in the <filename>postgresql.conf</> file or on the server command
!         line.
         </para>
        </listitem>
       </varlistentry>