diff --git a/bt5/erp5_rss_style/SkinTemplateItem/portal_skins/erp5_rss_style/Base_getRSSAuthor.xml b/bt5/erp5_rss_style/SkinTemplateItem/portal_skins/erp5_rss_style/Base_getRSSAuthor.xml
index 855dd2cb6e65ef37aa30f62436e1a93e5d0883f3..f464d081f131d9a3dec7a853cbb36edc305e0d9c 100644
--- a/bt5/erp5_rss_style/SkinTemplateItem/portal_skins/erp5_rss_style/Base_getRSSAuthor.xml
+++ b/bt5/erp5_rss_style/SkinTemplateItem/portal_skins/erp5_rss_style/Base_getRSSAuthor.xml
@@ -71,6 +71,8 @@
             <value> <string>"""\n
   Overwrite this script to get more meaningful information about author\n
   for RSS feeds.\n
+  It is highly recommended to return a valid email address here, to make the\n
+  feed 100% standard-compliant.\n
 """\n
 \n
 return context.getOwnerInfo().get(\'id\', \'\')\n
diff --git a/bt5/erp5_rss_style/bt/revision b/bt5/erp5_rss_style/bt/revision
index 301160a93062df23030a69f4b5e4d9bf71866ee9..f11c82a4cb6cc2e8f3bdf52b5cdeaad4d5bb214e 100644
--- a/bt5/erp5_rss_style/bt/revision
+++ b/bt5/erp5_rss_style/bt/revision
@@ -1 +1 @@
-8
\ No newline at end of file
+9
\ No newline at end of file