Index: openacs-4/packages/acs-subsite/lib/subsites.xql
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-subsite/lib/subsites.xql,v
diff -u -r1.3.20.1 -r1.3.20.2
--- openacs-4/packages/acs-subsite/lib/subsites.xql	9 Jul 2019 09:24:52 -0000	1.3.20.1
+++ openacs-4/packages/acs-subsite/lib/subsites.xql	15 Feb 2022 17:21:03 -0000	1.3.20.2
@@ -30,7 +30,8 @@
       and    p.package_key  in ('[join [subsite::package_keys] {','}]')
       and    ag.package_id = p.package_id
       and    g.group_id = ag.group_id
-      and    (g.join_policy != 'closed' or acs_permission.permission_p(p.package_id, :untrusted_user_id, 'read'))
+      and    (g.join_policy != 'closed' or
+              acs_permission.permission_p(p.package_id, :untrusted_user_id, 'read') = 't')
     order  by lower(instance_name)
 
       </querytext>