diff --git a/doc/src/sgml/ref/create_aggregate.sgml b/doc/src/sgml/ref/create_aggregate.sgml
index 9d12c8f59ac..e7ca7784772 100644
--- a/doc/src/sgml/ref/create_aggregate.sgml
+++ b/doc/src/sgml/ref/create_aggregate.sgml
@@ -41,7 +41,7 @@ CREATE [ OR REPLACE ] AGGREGATE <replaceable class="parameter">name</replaceable
     [ , MFINALFUNC_MODIFY = { READ_ONLY | SHAREABLE | READ_WRITE } ]
     [ , MINITCOND = <replaceable class="parameter">minitial_condition</replaceable> ]
     [ , SORTOP = <replaceable class="parameter">sort_operator</replaceable> ]
-    [ , SUPPORT = <replaceable class="parameter">psfunc</replaceable> ]
+    [ , SUPPORT = <replaceable class="parameter">support_function</replaceable> ]
     [ , PARALLEL = { SAFE | RESTRICTED | UNSAFE } ]
 )
 
@@ -54,7 +54,7 @@ CREATE [ OR REPLACE ] AGGREGATE <replaceable class="parameter">name</replaceable
     [ , FINALFUNC_EXTRA ]
     [ , FINALFUNC_MODIFY = { READ_ONLY | SHAREABLE | READ_WRITE } ]
     [ , INITCOND = <replaceable class="parameter">initial_condition</replaceable> ]
-    [ , SUPPORT = <replaceable class="parameter">psfunc</replaceable> ]
+    [ , SUPPORT = <replaceable class="parameter">support_function</replaceable> ]
     [ , PARALLEL = { SAFE | RESTRICTED | UNSAFE } ]
     [ , HYPOTHETICAL ]
 )
@@ -82,7 +82,7 @@ CREATE [ OR REPLACE ] AGGREGATE <replaceable class="parameter">name</replaceable
     [ , MFINALFUNC_MODIFY = { READ_ONLY | SHAREABLE | READ_WRITE } ]
     [ , MINITCOND = <replaceable class="parameter">minitial_condition</replaceable> ]
     [ , SORTOP = <replaceable class="parameter">sort_operator</replaceable> ]
-    [ , SUPPORT = <replaceable class="parameter">psfunc</replaceable> ]
+    [ , SUPPORT = <replaceable class="parameter">support_function</replaceable> ]
 )
 </synopsis>
  </refsynopsisdiv>
@@ -632,7 +632,7 @@ SELECT col FROM tab ORDER BY col USING sortop LIMIT 1;
    </varlistentry>
 
    <varlistentry>
-    <term><replaceable class="parameter">psfunc</replaceable></term>
+    <term><replaceable class="parameter">support_function</replaceable></term>
     <listitem>
      <para>
       The name (optionally schema-qualified) of a <firstterm>planner support