diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index d8d91678e86..9ef044ecadb 100644
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -2263,8 +2263,9 @@ TIMESTAMP WITH TIME ZONE '2004-10-19 10:23:54+02'
       then it is assumed to be in the time zone indicated by the system's
       <xref linkend="guc-timezone"/> parameter, and is converted to UTC using the
       offset for the <varname>timezone</varname> zone.
-      In either case, the value is stored internally as UTC, and the
-      originally stated or assumed time zone is not retained.
+      In either case, the value is stored internally as UTC.  The
+      originally stated or assumed time zone is not retained and
+      <emphasis>cannot</emphasis> be retrieved later.
      </para>
 
      <para>