diff --git a/doc/src/sgml/ref/prepare_transaction.sgml b/doc/src/sgml/ref/prepare_transaction.sgml
index 5016ca287e..d7bf2026f7 100644
--- a/doc/src/sgml/ref/prepare_transaction.sgml
+++ b/doc/src/sgml/ref/prepare_transaction.sgml
@@ -99,8 +99,8 @@ PREPARE TRANSACTION <replaceable class="parameter">transaction_id</replaceable>
   <para>
    It is not currently allowed to <command>PREPARE</command> a transaction that
    has executed any operations involving temporary tables or the session's
-   temporary namespace, created any cursors <literal>WITH HOLD</literal>, or
-   executed <command>LISTEN</command>, <command>UNLISTEN</command>, or
+   temporary namespace or foreign tables, created any cursors <literal>WITH HOLD</literal>,
+   or executed <command>LISTEN</command>, <command>UNLISTEN</command>, or
    <command>NOTIFY</command>.
    Those features are too tightly
    tied to the current session to be useful in a transaction to be prepared.