diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml
index ed2d9c60d5..f9feec3125 100644
--- a/doc/src/sgml/ddl.sgml
+++ b/doc/src/sgml/ddl.sgml
@@ -4057,17 +4057,6 @@ ALTER INDEX measurement_city_id_logdate_key
         might be poor.)
        </para>
       </listitem>
-
-      <listitem>
-       <para>
-        Some operations require a stronger lock when using declarative
-        partitioning than when using table inheritance.  For example, adding
-        or removing a partition to or from a partitioned table requires taking
-        an <literal>ACCESS EXCLUSIVE</literal> lock on the parent table,
-        whereas a <literal>SHARE UPDATE EXCLUSIVE</literal> lock is enough
-        in the case of regular inheritance.
-       </para>
-      </listitem>
      </itemizedlist>
     </para>