diff --git a/addons/portal_anonymous/security/ir.model.access.csv b/addons/portal_anonymous/security/ir.model.access.csv
index a26b600288d..24c29200230 100644
--- a/addons/portal_anonymous/security/ir.model.access.csv
+++ b/addons/portal_anonymous/security/ir.model.access.csv
@@ -1,3 +1,3 @@
 id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
-access_mail_message_portal,mail.message.portal,mail.model_mail_message,portal.group_anonymous,1,0,0,0
+access_mail_message_portal,mail.message.portal,mail.model_mail_message,portal.group_anonymous,1,0,1,0
 access_res_partner,res.partner,base.model_res_partner,portal.group_anonymous,1,0,0,0