diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index f4ba58bb5c3..59a0874528a 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -2788,7 +2788,7 @@ include_dir 'conf.d'
       </varlistentry>
 
       <varlistentry id="guc-io-workers" xreflabel="io_workers">
-       <term><varname>io_workers</varname> (<type>int</type>)
+       <term><varname>io_workers</varname> (<type>integer</type>)
        <indexterm>
         <primary><varname>io_workers</varname> configuration parameter</primary>
        </indexterm>