diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index b7e65a58ea5..3ec030288f4 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -11572,15 +11572,15 @@ SELECT NULLIF(value, '(none)') ...
        <indexterm>
         <primary>json_agg</primary>
        </indexterm>
-       <function>json_agg(<replaceable class="parameter">record</replaceable>)</function>
+       <function>json_agg(<replaceable class="parameter">expression</replaceable>)</function>
       </entry>
       <entry>
-       <type>record</type>
+       <type>expression</type>
       </entry>
       <entry>
        <type>json</type>
       </entry>
-      <entry>aggregates records as a JSON array of objects</entry>
+      <entry>aggregates values as a JSON array</entry>
      </row>
 
      <row>