--- ./doc/src/sgml/ref/let.sgml.orig	2022-07-22 12:04:25.096021723 +0200
+++ ./doc/src/sgml/ref/let.sgml	2022-07-24 15:05:39.038636565 +0200
@@ -58,7 +58,7 @@
     <term><literal>sql_expression</literal></term>
     <listitem>
      <para>
-      An SQL expression. The result is cast to the data type of the session
+      An SQL expression, in parentheses. The result must be of the same data type as the session
       variable.
      </para>
     </listitem>
@@ -69,7 +69,7 @@
     <listitem>
      <para>
       Reset the session variable to its default value, if that is defined.
-      If no explicit default value has been assigned, the session variable
+      If no explicit default value has been declared, the session variable
       is set to NULL.
      </para>
     </listitem>