diff --git a/doc/src/sgml/btree-gist.sgml b/doc/src/sgml/btree-gist.sgml
index 3b61d276a3..b67f20a00f 100644
--- a/doc/src/sgml/btree-gist.sgml
+++ b/doc/src/sgml/btree-gist.sgml
@@ -17,7 +17,7 @@
   <type>oid</type>, <type>money</type>, <type>char</type>,
   <type>varchar</type>, <type>text</type>, <type>bytea</type>, <type>bit</type>,
   <type>varbit</type>, <type>macaddr</type>, <type>macaddr8</type>, <type>inet</type>,
-  <type>cidr</type>, <type>uuid</type>, and all <type>enum</type> types.
+  <type>cidr</type>, <type>uuid</type>, <type>bool</type> and all <type>enum</type> types.
  </para>
 
  <para>