diff --git a/doc/src/sgml/ref/pg_ctl-ref.sgml b/doc/src/sgml/ref/pg_ctl-ref.sgml
new file mode 100644
index 7a4c2be..3107514
*** a/doc/src/sgml/ref/pg_ctl-ref.sgml
--- b/doc/src/sgml/ref/pg_ctl-ref.sgml
*************** PostgreSQL documentation
*** 188,194 ****
    <para>
     <option>restart</option> mode effectively executes a stop followed
     by a start.  This allows changing the <command>postgres</command>
!    command-line options.
    </para>
  
    <para>
--- 188,196 ----
    <para>
     <option>restart</option> mode effectively executes a stop followed
     by a start.  This allows changing the <command>postgres</command>
!    command-line options.  <option>restart</option> might fail if
!    relative paths specified were specified on the command-line during
!    server start.
    </para>
  
    <para>