diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index b265cc89c9d..0ac519706a4 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -9340,7 +9340,8 @@ COPY postgres_log FROM '/full/path/to/logfile.csv' WITH csv;
       <varlistentry id="guc-vacuum-truncate" xreflabel="vacuum_truncate">
        <term><varname>vacuum_truncate</varname> (<type>boolean</type>)
        <indexterm>
-        <primary><varname>vacuum_truncate</varname> configuration parameter</primary>
+        <primary><varname>vacuum_truncate</varname></primary>
+        <secondary>configuration parameter</secondary>
        </indexterm>
        </term>
        <listitem>
@@ -9544,7 +9545,8 @@ COPY postgres_log FROM '/full/path/to/logfile.csv' WITH csv;
      <varlistentry id="guc-vacuum-max-eager-freeze-failure-rate" xreflabel="vacuum_max_eager_freeze_failure_rate">
       <term><varname>vacuum_max_eager_freeze_failure_rate</varname> (<type>floating point</type>)
       <indexterm>
-       <primary><varname>vacuum_max_eager_freeze_failure_rate</varname> configuration parameter</primary>
+       <primary><varname>vacuum_max_eager_freeze_failure_rate</varname></primary>
+       <secondary>configuration parameter</secondary>
       </indexterm>
       </term>
       <listitem>
diff --git a/doc/src/sgml/ref/create_table.sgml b/doc/src/sgml/ref/create_table.sgml
index a5816918182..9d92e0a3551 100644
--- a/doc/src/sgml/ref/create_table.sgml
+++ b/doc/src/sgml/ref/create_table.sgml
@@ -1694,7 +1694,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
    <varlistentry id="reloption-vacuum-truncate" xreflabel="vacuum_truncate">
     <term><literal>vacuum_truncate</literal>, <literal>toast.vacuum_truncate</literal> (<type>boolean</type>)
     <indexterm>
-     <primary><varname>vacuum_truncate</varname> storage parameter</primary>
+     <primary><varname>vacuum_truncate</varname></primary>
+     <secondary>storage parameter</secondary>
     </indexterm>
     </term>
     <listitem>